Home / 141,780.59-195,657.05-78,118.37

Finding the Fourth Proportional to 141,780.59, 195,657.05 and 78,118.37

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Solution

The fourth proportional to 141,780.59, 195,657.05 and 78,118.37 is: 107,803.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,780.59 : 195,657.05 = 78,118.37 : x
  2. Step 2: Convert to fraction form
    141,780.59/195,657.05 = 78,118.37/x
  3. Step 3: Cross multiply
    141,780.59x = 195,657.05 × 78,118.37
  4. Step 4: Simplify right side
    141,780.59x = 15,284,408,456.13
  5. Step 5: Solve for x
    x = 15,284,408,456.13/141,780.59
  6. Step 6: Final answer
    x = 107,803.25

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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.