Home / 115,732.32-173,585.52-78,531.36

Finding the Fourth Proportional to 115,732.32, 173,585.52 and 78,531.36

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Solution

The fourth proportional to 115,732.32, 173,585.52 and 78,531.36 is: 117,788.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,732.32 : 173,585.52 = 78,531.36 : x
  2. Step 2: Convert to fraction form
    115,732.32/173,585.52 = 78,531.36/x
  3. Step 3: Cross multiply
    115,732.32x = 173,585.52 × 78,531.36
  4. Step 4: Simplify right side
    115,732.32x = 13,631,906,961.91
  5. Step 5: Solve for x
    x = 13,631,906,961.91/115,732.32
  6. Step 6: Final answer
    x = 117,788.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.