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Finding the Fourth Proportional to 140,387.67, 210,550.57 and 40,526.17

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Solution

The fourth proportional to 140,387.67, 210,550.57 and 40,526.17 is: 60,780.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,387.67 : 210,550.57 = 40,526.17 : x
  2. Step 2: Convert to fraction form
    140,387.67/210,550.57 = 40,526.17/x
  3. Step 3: Cross multiply
    140,387.67x = 210,550.57 × 40,526.17
  4. Step 4: Simplify right side
    140,387.67x = 8,532,807,565.73
  5. Step 5: Solve for x
    x = 8,532,807,565.73/140,387.67
  6. Step 6: Final answer
    x = 60,780.32

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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.