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Finding the Fourth Proportional to 125,245.38, 172,845.68 and 74,288.28

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Solution

The fourth proportional to 125,245.38, 172,845.68 and 74,288.28 is: 102,522.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,245.38 : 172,845.68 = 74,288.28 : x
  2. Step 2: Convert to fraction form
    125,245.38/172,845.68 = 74,288.28/x
  3. Step 3: Cross multiply
    125,245.38x = 172,845.68 × 74,288.28
  4. Step 4: Simplify right side
    125,245.38x = 12,840,407,901.19
  5. Step 5: Solve for x
    x = 12,840,407,901.19/125,245.38
  6. Step 6: Final answer
    x = 102,522.01

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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.