Home / 115,508.20-159,399.58-64,521.76

Finding the Fourth Proportional to 115,508.20, 159,399.58 and 64,521.76

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Solution

The fourth proportional to 115,508.20, 159,399.58 and 64,521.76 is: 89,039.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,508.20 : 159,399.58 = 64,521.76 : x
  2. Step 2: Convert to fraction form
    115,508.20/159,399.58 = 64,521.76/x
  3. Step 3: Cross multiply
    115,508.20x = 159,399.58 × 64,521.76
  4. Step 4: Simplify right side
    115,508.20x = 10,284,741,444.86
  5. Step 5: Solve for x
    x = 10,284,741,444.86/115,508.20
  6. Step 6: Final answer
    x = 89,039.06

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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.