Home / 141,817.12-195,711.72-78,159.02

Finding the Fourth Proportional to 141,817.12, 195,711.72 and 78,159.02

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Solution

The fourth proportional to 141,817.12, 195,711.72 and 78,159.02 is: 107,861.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,817.12 : 195,711.72 = 78,159.02 : x
  2. Step 2: Convert to fraction form
    141,817.12/195,711.72 = 78,159.02/x
  3. Step 3: Cross multiply
    141,817.12x = 195,711.72 × 78,159.02
  4. Step 4: Simplify right side
    141,817.12x = 15,296,635,259.16
  5. Step 5: Solve for x
    x = 15,296,635,259.16/141,817.12
  6. Step 6: Final answer
    x = 107,861.70

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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.