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Finding the Fourth Proportional to 96,996.96, 145,339.92 and 87,665.76

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Solution

The fourth proportional to 96,996.96, 145,339.92 and 87,665.76 is: 131,358.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,996.96 : 145,339.92 = 87,665.76 : x
  2. Step 2: Convert to fraction form
    96,996.96/145,339.92 = 87,665.76/x
  3. Step 3: Cross multiply
    96,996.96x = 145,339.92 × 87,665.76
  4. Step 4: Simplify right side
    96,996.96x = 12,741,334,545.14
  5. Step 5: Solve for x
    x = 12,741,334,545.14/96,996.96
  6. Step 6: Final answer
    x = 131,358.08

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1.5x scale

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.