Home / 115,385.17-159,231.45-65,084.17

Finding the Fourth Proportional to 115,385.17, 159,231.45 and 65,084.17

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Solution

The fourth proportional to 115,385.17, 159,231.45 and 65,084.17 is: 89,816.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,385.17 : 159,231.45 = 65,084.17 : x
  2. Step 2: Convert to fraction form
    115,385.17/159,231.45 = 65,084.17/x
  3. Step 3: Cross multiply
    115,385.17x = 159,231.45 × 65,084.17
  4. Step 4: Simplify right side
    115,385.17x = 10,363,446,761.15
  5. Step 5: Solve for x
    x = 10,363,446,761.15/115,385.17
  6. Step 6: Final answer
    x = 89,816.11

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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.