Home / 142,805.10-214,002.45-80,343.66

Finding the Fourth Proportional to 142,805.10, 214,002.45 and 80,343.66

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Solution

The fourth proportional to 142,805.10, 214,002.45 and 80,343.66 is: 120,400.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,805.10 : 214,002.45 = 80,343.66 : x
  2. Step 2: Convert to fraction form
    142,805.10/214,002.45 = 80,343.66/x
  3. Step 3: Cross multiply
    142,805.10x = 214,002.45 × 80,343.66
  4. Step 4: Simplify right side
    142,805.10x = 17,193,740,081.97
  5. Step 5: Solve for x
    x = 17,193,740,081.97/142,805.10
  6. Step 6: Final answer
    x = 120,400.04

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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.