Home / 141,431.87-195,177.40-77,770.13

Finding the Fourth Proportional to 141,431.87, 195,177.40 and 77,770.13

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Solution

The fourth proportional to 141,431.87, 195,177.40 and 77,770.13 is: 107,323.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,431.87 : 195,177.40 = 77,770.13 : x
  2. Step 2: Convert to fraction form
    141,431.87/195,177.40 = 77,770.13/x
  3. Step 3: Cross multiply
    141,431.87x = 195,177.40 × 77,770.13
  4. Step 4: Simplify right side
    141,431.87x = 15,178,970,600.75
  5. Step 5: Solve for x
    x = 15,178,970,600.75/141,431.87
  6. Step 6: Final answer
    x = 107,323.55

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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.