Home / 102,935.15-142,008.21-62,642.30

Finding the Fourth Proportional to 102,935.15, 142,008.21 and 62,642.30

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Solution

The fourth proportional to 102,935.15, 142,008.21 and 62,642.30 is: 86,420.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,935.15 : 142,008.21 = 62,642.30 : x
  2. Step 2: Convert to fraction form
    102,935.15/142,008.21 = 62,642.30/x
  3. Step 3: Cross multiply
    102,935.15x = 142,008.21 × 62,642.30
  4. Step 4: Simplify right side
    102,935.15x = 8,895,720,893.28
  5. Step 5: Solve for x
    x = 8,895,720,893.28/102,935.15
  6. Step 6: Final answer
    x = 86,420.63

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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.