Home / 142,237,920,100.33-196,300,743,226.32-78,021,055,812.25

Finding the Fourth Proportional to 142,237,920,100.33, 196,300,743,226.32 and 78,021,055,812.25

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Solution

The fourth proportional to 142,237,920,100.33, 196,300,743,226.32 and 78,021,055,812.25 is: 107,675,866,129.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,237,920,100.33 : 196,300,743,226.32 = 78,021,055,812.25 : x
  2. Step 2: Convert to fraction form
    142,237,920,100.33/196,300,743,226.32 = 78,021,055,812.25/x
  3. Step 3: Cross multiply
    142,237,920,100.33x = 196,300,743,226.32 × 78,021,055,812.25
  4. Step 4: Simplify right side
    142,237,920,100.33x = 15,315,591,243,246,868,627,456
  5. Step 5: Solve for x
    x = 15,315,591,243,246,868,627,456/142,237,920,100.33
  6. Step 6: Final answer
    x = 107,675,866,129.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.