Home / 115,731.76-173,419.04-78,144.52

Finding the Fourth Proportional to 115,731.76, 173,419.04 and 78,144.52

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Solution

The fourth proportional to 115,731.76, 173,419.04 and 78,144.52 is: 117,096.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,731.76 : 173,419.04 = 78,144.52 : x
  2. Step 2: Convert to fraction form
    115,731.76/173,419.04 = 78,144.52/x
  3. Step 3: Cross multiply
    115,731.76x = 173,419.04 × 78,144.52
  4. Step 4: Simplify right side
    115,731.76x = 13,551,747,639.66
  5. Step 5: Solve for x
    x = 13,551,747,639.66/115,731.76
  6. Step 6: Final answer
    x = 117,096.19

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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.