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Finding the Fourth Proportional to 138,056.60, 207,044.80 and 53,797.96

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Solution

The fourth proportional to 138,056.60, 207,044.80 and 53,797.96 is: 80,681.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,056.60 : 207,044.80 = 53,797.96 : x
  2. Step 2: Convert to fraction form
    138,056.60/207,044.80 = 53,797.96/x
  3. Step 3: Cross multiply
    138,056.60x = 207,044.80 × 53,797.96
  4. Step 4: Simplify right side
    138,056.60x = 11,138,587,868.61
  5. Step 5: Solve for x
    x = 11,138,587,868.61/138,056.60
  6. Step 6: Final answer
    x = 80,681.31

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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.