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Finding the Fourth Proportional to 169,631.20, 254,446.80 and 130,265.20

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Solution

The fourth proportional to 169,631.20, 254,446.80 and 130,265.20 is: 195,397.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,631.20 : 254,446.80 = 130,265.20 : x
  2. Step 2: Convert to fraction form
    169,631.20/254,446.80 = 130,265.20/x
  3. Step 3: Cross multiply
    169,631.20x = 254,446.80 × 130,265.20
  4. Step 4: Simplify right side
    169,631.20x = 33,145,563,291.36
  5. Step 5: Solve for x
    x = 33,145,563,291.36/169,631.20
  6. Step 6: Final answer
    x = 195,397.80

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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.