Home / 142,575,389.28-196,754,415.84-77,385,293.28

Finding the Fourth Proportional to 142,575,389.28, 196,754,415.84 and 77,385,293.28

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Solution

The fourth proportional to 142,575,389.28, 196,754,415.84 and 77,385,293.28 is: 106,791,910.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,575,389.28 : 196,754,415.84 = 77,385,293.28 : x
  2. Step 2: Convert to fraction form
    142,575,389.28/196,754,415.84 = 77,385,293.28/x
  3. Step 3: Cross multiply
    142,575,389.28x = 196,754,415.84 × 77,385,293.28
  4. Step 4: Simplify right side
    142,575,389.28x = 15,225,898,173,913,478
  5. Step 5: Solve for x
    x = 15,225,898,173,913,478/142,575,389.28
  6. Step 6: Final answer
    x = 106,791,910.24

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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.