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Finding the Fourth Proportional to 145,757.43, 218,752.79 and 75,656.79

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Solution

The fourth proportional to 145,757.43, 218,752.79 and 75,656.79 is: 113,545.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,757.43 : 218,752.79 = 75,656.79 : x
  2. Step 2: Convert to fraction form
    145,757.43/218,752.79 = 75,656.79/x
  3. Step 3: Cross multiply
    145,757.43x = 218,752.79 × 75,656.79
  4. Step 4: Simplify right side
    145,757.43x = 16,550,133,516.66
  5. Step 5: Solve for x
    x = 16,550,133,516.66/145,757.43
  6. Step 6: Final answer
    x = 113,545.73

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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.