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Finding the Fourth Proportional to 142,398.80, 213,617.40 and 48,933.20

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Solution

The fourth proportional to 142,398.80, 213,617.40 and 48,933.20 is: 73,406.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,398.80 : 213,617.40 = 48,933.20 : x
  2. Step 2: Convert to fraction form
    142,398.80/213,617.40 = 48,933.20/x
  3. Step 3: Cross multiply
    142,398.80x = 213,617.40 × 48,933.20
  4. Step 4: Simplify right side
    142,398.80x = 10,452,982,957.68
  5. Step 5: Solve for x
    x = 10,452,982,957.68/142,398.80
  6. Step 6: Final answer
    x = 73,406.40

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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.