Home / 115,285.32-159,167.79-72,323.71

Finding the Fourth Proportional to 115,285.32, 159,167.79 and 72,323.71

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Solution

The fourth proportional to 115,285.32, 159,167.79 and 72,323.71 is: 99,853.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,285.32 : 159,167.79 = 72,323.71 : x
  2. Step 2: Convert to fraction form
    115,285.32/159,167.79 = 72,323.71/x
  3. Step 3: Cross multiply
    115,285.32x = 159,167.79 × 72,323.71
  4. Step 4: Simplify right side
    115,285.32x = 11,511,605,085.30
  5. Step 5: Solve for x
    x = 11,511,605,085.30/115,285.32
  6. Step 6: Final answer
    x = 99,853.17

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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.