Home / 142,979.76-214,330.19-68,079.78

Finding the Fourth Proportional to 142,979.76, 214,330.19 and 68,079.78

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Solution

The fourth proportional to 142,979.76, 214,330.19 and 68,079.78 is: 102,053.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,979.76 : 214,330.19 = 68,079.78 : x
  2. Step 2: Convert to fraction form
    142,979.76/214,330.19 = 68,079.78/x
  3. Step 3: Cross multiply
    142,979.76x = 214,330.19 × 68,079.78
  4. Step 4: Simplify right side
    142,979.76x = 14,591,551,842.16
  5. Step 5: Solve for x
    x = 14,591,551,842.16/142,979.76
  6. Step 6: Final answer
    x = 102,053.27

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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.