Home / 115,318.80-159,141.16-66,931.43

Finding the Fourth Proportional to 115,318.80, 159,141.16 and 66,931.43

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Solution

The fourth proportional to 115,318.80, 159,141.16 and 66,931.43 is: 92,366.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,318.80 : 159,141.16 = 66,931.43 : x
  2. Step 2: Convert to fraction form
    115,318.80/159,141.16 = 66,931.43/x
  3. Step 3: Cross multiply
    115,318.80x = 159,141.16 × 66,931.43
  4. Step 4: Simplify right side
    115,318.80x = 10,651,544,545.92
  5. Step 5: Solve for x
    x = 10,651,544,545.92/115,318.80
  6. Step 6: Final answer
    x = 92,366.07

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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.