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Finding the Fourth Proportional to 138,229.98, 207,343.60 and 63,328.87

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Solution

The fourth proportional to 138,229.98, 207,343.60 and 63,328.87 is: 94,992.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,229.98 : 207,343.60 = 63,328.87 : x
  2. Step 2: Convert to fraction form
    138,229.98/207,343.60 = 63,328.87/x
  3. Step 3: Cross multiply
    138,229.98x = 207,343.60 × 63,328.87
  4. Step 4: Simplify right side
    138,229.98x = 13,130,835,990.59
  5. Step 5: Solve for x
    x = 13,130,835,990.59/138,229.98
  6. Step 6: Final answer
    x = 94,992.68

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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.