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Finding the Fourth Proportional to 170,129.80, 255,304.05 and 99,052.30

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Solution

The fourth proportional to 170,129.80, 255,304.05 and 99,052.30 is: 148,642.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,129.80 : 255,304.05 = 99,052.30 : x
  2. Step 2: Convert to fraction form
    170,129.80/255,304.05 = 99,052.30/x
  3. Step 3: Cross multiply
    170,129.80x = 255,304.05 × 99,052.30
  4. Step 4: Simplify right side
    170,129.80x = 25,288,453,351.82
  5. Step 5: Solve for x
    x = 25,288,453,351.82/170,129.80
  6. Step 6: Final answer
    x = 148,642.12

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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.