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Finding the Fourth Proportional to 130,458.40, 195,687.60 and 129,680.80

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Solution

The fourth proportional to 130,458.40, 195,687.60 and 129,680.80 is: 194,521.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,458.40 : 195,687.60 = 129,680.80 : x
  2. Step 2: Convert to fraction form
    130,458.40/195,687.60 = 129,680.80/x
  3. Step 3: Cross multiply
    130,458.40x = 195,687.60 × 129,680.80
  4. Step 4: Simplify right side
    130,458.40x = 25,376,924,518.08
  5. Step 5: Solve for x
    x = 25,376,924,518.08/130,458.40
  6. Step 6: Final answer
    x = 194,521.20

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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.