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Finding the Fourth Proportional to 145,755.38, 218,666.55 and 75,619.10

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Solution

The fourth proportional to 145,755.38, 218,666.55 and 75,619.10 is: 113,446.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,755.38 : 218,666.55 = 75,619.10 : x
  2. Step 2: Convert to fraction form
    145,755.38/218,666.55 = 75,619.10/x
  3. Step 3: Cross multiply
    145,755.38x = 218,666.55 × 75,619.10
  4. Step 4: Simplify right side
    145,755.38x = 16,535,367,711.11
  5. Step 5: Solve for x
    x = 16,535,367,711.11/145,755.38
  6. Step 6: Final answer
    x = 113,446.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.