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Finding the Fourth Proportional to 137,988.76, 207,905.23 and 124,677.22

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Solution

The fourth proportional to 137,988.76, 207,905.23 and 124,677.22 is: 187,848.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,988.76 : 207,905.23 = 124,677.22 : x
  2. Step 2: Convert to fraction form
    137,988.76/207,905.23 = 124,677.22/x
  3. Step 3: Cross multiply
    137,988.76x = 207,905.23 × 124,677.22
  4. Step 4: Simplify right side
    137,988.76x = 25,921,046,099.86
  5. Step 5: Solve for x
    x = 25,921,046,099.86/137,988.76
  6. Step 6: Final answer
    x = 187,848.97

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.