Home / 115,742.72-159,753.60-65,471.36

Finding the Fourth Proportional to 115,742.72, 159,753.60 and 65,471.36

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Solution

The fourth proportional to 115,742.72, 159,753.60 and 65,471.36 is: 90,366.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,742.72 : 159,753.60 = 65,471.36 : x
  2. Step 2: Convert to fraction form
    115,742.72/159,753.60 = 65,471.36/x
  3. Step 3: Cross multiply
    115,742.72x = 159,753.60 × 65,471.36
  4. Step 4: Simplify right side
    115,742.72x = 10,459,285,456.90
  5. Step 5: Solve for x
    x = 10,459,285,456.90/115,742.72
  6. Step 6: Final answer
    x = 90,366.68

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1.5x scale

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.