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Finding the Fourth Proportional to 142,330.62, 213,323.29 and 104,540.28

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Solution

The fourth proportional to 142,330.62, 213,323.29 and 104,540.28 is: 156,683.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,330.62 : 213,323.29 = 104,540.28 : x
  2. Step 2: Convert to fraction form
    142,330.62/213,323.29 = 104,540.28/x
  3. Step 3: Cross multiply
    142,330.62x = 213,323.29 × 104,540.28
  4. Step 4: Simplify right side
    142,330.62x = 22,300,876,467.12
  5. Step 5: Solve for x
    x = 22,300,876,467.12/142,330.62
  6. Step 6: Final answer
    x = 156,683.62

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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.