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Finding the Fourth Proportional to 137,263.68, 205,560.18 and 84,600.72

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Solution

The fourth proportional to 137,263.68, 205,560.18 and 84,600.72 is: 126,694.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,263.68 : 205,560.18 = 84,600.72 : x
  2. Step 2: Convert to fraction form
    137,263.68/205,560.18 = 84,600.72/x
  3. Step 3: Cross multiply
    137,263.68x = 205,560.18 × 84,600.72
  4. Step 4: Simplify right side
    137,263.68x = 17,390,539,231.33
  5. Step 5: Solve for x
    x = 17,390,539,231.33/137,263.68
  6. Step 6: Final answer
    x = 126,694.40

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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.