Home / 141,789.79-195,678.65-78,127.57

Finding the Fourth Proportional to 141,789.79, 195,678.65 and 78,127.57

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Solution

The fourth proportional to 141,789.79, 195,678.65 and 78,127.57 is: 107,820.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,789.79 : 195,678.65 = 78,127.57 : x
  2. Step 2: Convert to fraction form
    141,789.79/195,678.65 = 78,127.57/x
  3. Step 3: Cross multiply
    141,789.79x = 195,678.65 × 78,127.57
  4. Step 4: Simplify right side
    141,789.79x = 15,287,897,425.38
  5. Step 5: Solve for x
    x = 15,287,897,425.38/141,789.79
  6. Step 6: Final answer
    x = 107,820.86

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1.5x scale

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.