Home / 141,869.88-195,781.05-78,206.31

Finding the Fourth Proportional to 141,869.88, 195,781.05 and 78,206.31

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Solution

The fourth proportional to 141,869.88, 195,781.05 and 78,206.31 is: 107,925.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,869.88 : 195,781.05 = 78,206.31 : x
  2. Step 2: Convert to fraction form
    141,869.88/195,781.05 = 78,206.31/x
  3. Step 3: Cross multiply
    141,869.88x = 195,781.05 × 78,206.31
  4. Step 4: Simplify right side
    141,869.88x = 15,311,313,488.43
  5. Step 5: Solve for x
    x = 15,311,313,488.43/141,869.88
  6. Step 6: Final answer
    x = 107,925.05

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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.