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Finding the Fourth Proportional to 142,600.80, 213,728.40 and 63,631.20

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Solution

The fourth proportional to 142,600.80, 213,728.40 and 63,631.20 is: 95,369.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,600.80 : 213,728.40 = 63,631.20 : x
  2. Step 2: Convert to fraction form
    142,600.80/213,728.40 = 63,631.20/x
  3. Step 3: Cross multiply
    142,600.80x = 213,728.40 × 63,631.20
  4. Step 4: Simplify right side
    142,600.80x = 13,599,794,566.08
  5. Step 5: Solve for x
    x = 13,599,794,566.08/142,600.80
  6. Step 6: Final answer
    x = 95,369.69

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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.