Home / 115,508.12-159,399.50-64,521.61

Finding the Fourth Proportional to 115,508.12, 159,399.50 and 64,521.61

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Solution

The fourth proportional to 115,508.12, 159,399.50 and 64,521.61 is: 89,038.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,508.12 : 159,399.50 = 64,521.61 : x
  2. Step 2: Convert to fraction form
    115,508.12/159,399.50 = 64,521.61/x
  3. Step 3: Cross multiply
    115,508.12x = 159,399.50 × 64,521.61
  4. Step 4: Simplify right side
    115,508.12x = 10,284,711,652.09
  5. Step 5: Solve for x
    x = 10,284,711,652.09/115,508.12
  6. Step 6: Final answer
    x = 89,038.87

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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.