Home / 90,884.92-136,115.76-87,732

Finding the Fourth Proportional to 90,884.92, 136,115.76 and 87,732

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Solution

The fourth proportional to 90,884.92, 136,115.76 and 87,732 is: 131,393.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,884.92 : 136,115.76 = 87,732 : x
  2. Step 2: Convert to fraction form
    90,884.92/136,115.76 = 87,732/x
  3. Step 3: Cross multiply
    90,884.92x = 136,115.76 × 87,732
  4. Step 4: Simplify right side
    90,884.92x = 11,941,707,856.32
  5. Step 5: Solve for x
    x = 11,941,707,856.32/90,884.92
  6. Step 6: Final answer
    x = 131,393.72

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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.