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Finding the Fourth Proportional to 138,374.11, 207,566.63 and 38,543.03

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Solution

The fourth proportional to 138,374.11, 207,566.63 and 38,543.03 is: 57,816.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,374.11 : 207,566.63 = 38,543.03 : x
  2. Step 2: Convert to fraction form
    138,374.11/207,566.63 = 38,543.03/x
  3. Step 3: Cross multiply
    138,374.11x = 207,566.63 × 38,543.03
  4. Step 4: Simplify right side
    138,374.11x = 8,000,245,809.26
  5. Step 5: Solve for x
    x = 8,000,245,809.26/138,374.11
  6. Step 6: Final answer
    x = 57,816.06

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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.