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Finding the Fourth Proportional to 138,470.30, 207,688.98 and 44,975.96

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Solution

The fourth proportional to 138,470.30, 207,688.98 and 44,975.96 is: 67,458.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,470.30 : 207,688.98 = 44,975.96 : x
  2. Step 2: Convert to fraction form
    138,470.30/207,688.98 = 44,975.96/x
  3. Step 3: Cross multiply
    138,470.30x = 207,688.98 × 44,975.96
  4. Step 4: Simplify right side
    138,470.30x = 9,341,011,256.92
  5. Step 5: Solve for x
    x = 9,341,011,256.92/138,470.30
  6. Step 6: Final answer
    x = 67,458.59

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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.