Home / 142,552.20-196,717.12-78,892.68

Finding the Fourth Proportional to 142,552.20, 196,717.12 and 78,892.68

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Solution

The fourth proportional to 142,552.20, 196,717.12 and 78,892.68 is: 108,869.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,552.20 : 196,717.12 = 78,892.68 : x
  2. Step 2: Convert to fraction form
    142,552.20/196,717.12 = 78,892.68/x
  3. Step 3: Cross multiply
    142,552.20x = 196,717.12 × 78,892.68
  4. Step 4: Simplify right side
    142,552.20x = 15,519,540,798.68
  5. Step 5: Solve for x
    x = 15,519,540,798.68/142,552.20
  6. Step 6: Final answer
    x = 108,869.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.