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Finding the Fourth Proportional to 153,980.60, 231,002.10 and 87,452.60

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Solution

The fourth proportional to 153,980.60, 231,002.10 and 87,452.60 is: 131,196.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,980.60 : 231,002.10 = 87,452.60 : x
  2. Step 2: Convert to fraction form
    153,980.60/231,002.10 = 87,452.60/x
  3. Step 3: Cross multiply
    153,980.60x = 231,002.10 × 87,452.60
  4. Step 4: Simplify right side
    153,980.60x = 20,201,734,250.46
  5. Step 5: Solve for x
    x = 20,201,734,250.46/153,980.60
  6. Step 6: Final answer
    x = 131,196.62

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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.