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Finding the Fourth Proportional to 96,079.92, 143,489.10 and 81,888.72

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Solution

The fourth proportional to 96,079.92, 143,489.10 and 81,888.72 is: 122,295.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,079.92 : 143,489.10 = 81,888.72 : x
  2. Step 2: Convert to fraction form
    96,079.92/143,489.10 = 81,888.72/x
  3. Step 3: Cross multiply
    96,079.92x = 143,489.10 × 81,888.72
  4. Step 4: Simplify right side
    96,079.92x = 11,750,138,732.95
  5. Step 5: Solve for x
    x = 11,750,138,732.95/96,079.92
  6. Step 6: Final answer
    x = 122,295.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.