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Finding the Fourth Proportional to 151,129.92, 208,555.92 and 87,466.44

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Solution

The fourth proportional to 151,129.92, 208,555.92 and 87,466.44 is: 120,701.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,129.92 : 208,555.92 = 87,466.44 : x
  2. Step 2: Convert to fraction form
    151,129.92/208,555.92 = 87,466.44/x
  3. Step 3: Cross multiply
    151,129.92x = 208,555.92 × 87,466.44
  4. Step 4: Simplify right side
    151,129.92x = 18,241,643,863.32
  5. Step 5: Solve for x
    x = 18,241,643,863.32/151,129.92
  6. Step 6: Final answer
    x = 120,701.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.