Home / 141,929.76-195,864.36-78,269.88

Finding the Fourth Proportional to 141,929.76, 195,864.36 and 78,269.88

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Solution

The fourth proportional to 141,929.76, 195,864.36 and 78,269.88 is: 108,013.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,929.76 : 195,864.36 = 78,269.88 : x
  2. Step 2: Convert to fraction form
    141,929.76/195,864.36 = 78,269.88/x
  3. Step 3: Cross multiply
    141,929.76x = 195,864.36 × 78,269.88
  4. Step 4: Simplify right side
    141,929.76x = 15,330,279,953.48
  5. Step 5: Solve for x
    x = 15,330,279,953.48/141,929.76
  6. Step 6: Final answer
    x = 108,013.15

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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.