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Finding the Fourth Proportional to 105,755.95, 145,892.91 and 63,306.28

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Solution

The fourth proportional to 105,755.95, 145,892.91 and 63,306.28 is: 87,332.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,755.95 : 145,892.91 = 63,306.28 : x
  2. Step 2: Convert to fraction form
    105,755.95/145,892.91 = 63,306.28/x
  3. Step 3: Cross multiply
    105,755.95x = 145,892.91 × 63,306.28
  4. Step 4: Simplify right side
    105,755.95x = 9,235,937,410.47
  5. Step 5: Solve for x
    x = 9,235,937,410.47/105,755.95
  6. Step 6: Final answer
    x = 87,332.56

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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.