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Finding the Fourth Proportional to 138,457.44, 207,658.80 and 63,557.28

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Solution

The fourth proportional to 138,457.44, 207,658.80 and 63,557.28 is: 95,323.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,457.44 : 207,658.80 = 63,557.28 : x
  2. Step 2: Convert to fraction form
    138,457.44/207,658.80 = 63,557.28/x
  3. Step 3: Cross multiply
    138,457.44x = 207,658.80 × 63,557.28
  4. Step 4: Simplify right side
    138,457.44x = 13,198,228,496.06
  5. Step 5: Solve for x
    x = 13,198,228,496.06/138,457.44
  6. Step 6: Final answer
    x = 95,323.36

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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.