Home / 142,356.30-213,425.10-80,026.80

Finding the Fourth Proportional to 142,356.30, 213,425.10 and 80,026.80

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Solution

The fourth proportional to 142,356.30, 213,425.10 and 80,026.80 is: 119,978.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,356.30 : 213,425.10 = 80,026.80 : x
  2. Step 2: Convert to fraction form
    142,356.30/213,425.10 = 80,026.80/x
  3. Step 3: Cross multiply
    142,356.30x = 213,425.10 × 80,026.80
  4. Step 4: Simplify right side
    142,356.30x = 17,079,727,792.68
  5. Step 5: Solve for x
    x = 17,079,727,792.68/142,356.30
  6. Step 6: Final answer
    x = 119,978.73

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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.