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Finding the Fourth Proportional to 172,480.60, 258,375.30 and 98,522.20

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Solution

The fourth proportional to 172,480.60, 258,375.30 and 98,522.20 is: 147,585.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,480.60 : 258,375.30 = 98,522.20 : x
  2. Step 2: Convert to fraction form
    172,480.60/258,375.30 = 98,522.20/x
  3. Step 3: Cross multiply
    172,480.60x = 258,375.30 × 98,522.20
  4. Step 4: Simplify right side
    172,480.60x = 25,455,702,981.66
  5. Step 5: Solve for x
    x = 25,455,702,981.66/172,480.60
  6. Step 6: Final answer
    x = 147,585.89

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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.