Home / 115,764.16-159,753.92-64,776.96

Finding the Fourth Proportional to 115,764.16, 159,753.92 and 64,776.96

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Solution

The fourth proportional to 115,764.16, 159,753.92 and 64,776.96 is: 89,391.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,764.16 : 159,753.92 = 64,776.96 : x
  2. Step 2: Convert to fraction form
    115,764.16/159,753.92 = 64,776.96/x
  3. Step 3: Cross multiply
    115,764.16x = 159,753.92 × 64,776.96
  4. Step 4: Simplify right side
    115,764.16x = 10,348,373,285.68
  5. Step 5: Solve for x
    x = 10,348,373,285.68/115,764.16
  6. Step 6: Final answer
    x = 89,391.86

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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.