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Finding the Fourth Proportional to 115,375.92, 172,928.08 and 52,122.16

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Solution

The fourth proportional to 115,375.92, 172,928.08 and 52,122.16 is: 78,121.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,375.92 : 172,928.08 = 52,122.16 : x
  2. Step 2: Convert to fraction form
    115,375.92/172,928.08 = 52,122.16/x
  3. Step 3: Cross multiply
    115,375.92x = 172,928.08 × 52,122.16
  4. Step 4: Simplify right side
    115,375.92x = 9,013,385,054.25
  5. Step 5: Solve for x
    x = 9,013,385,054.25/115,375.92
  6. Step 6: Final answer
    x = 78,121.89

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1.5x scale

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.