Home / 142,215.90-196,253.49-77,684.10

Finding the Fourth Proportional to 142,215.90, 196,253.49 and 77,684.10

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Solution

The fourth proportional to 142,215.90, 196,253.49 and 77,684.10 is: 107,201.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,215.90 : 196,253.49 = 77,684.10 : x
  2. Step 2: Convert to fraction form
    142,215.90/196,253.49 = 77,684.10/x
  3. Step 3: Cross multiply
    142,215.90x = 196,253.49 × 77,684.10
  4. Step 4: Simplify right side
    142,215.90x = 15,245,775,742.51
  5. Step 5: Solve for x
    x = 15,245,775,742.51/142,215.90
  6. Step 6: Final answer
    x = 107,201.63

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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.