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Finding the Fourth Proportional to 138,365.95, 207,549.08 and 38,526.36

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Solution

The fourth proportional to 138,365.95, 207,549.08 and 38,526.36 is: 57,789.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,365.95 : 207,549.08 = 38,526.36 : x
  2. Step 2: Convert to fraction form
    138,365.95/207,549.08 = 38,526.36/x
  3. Step 3: Cross multiply
    138,365.95x = 207,549.08 × 38,526.36
  4. Step 4: Simplify right side
    138,365.95x = 7,996,110,381.12
  5. Step 5: Solve for x
    x = 7,996,110,381.12/138,365.95
  6. Step 6: Final answer
    x = 57,789.58

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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.