Home / 141,400.80-195,136.56-77,739.84

Finding the Fourth Proportional to 141,400.80, 195,136.56 and 77,739.84

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Solution

The fourth proportional to 141,400.80, 195,136.56 and 77,739.84 is: 107,282.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,400.80 : 195,136.56 = 77,739.84 : x
  2. Step 2: Convert to fraction form
    141,400.80/195,136.56 = 77,739.84/x
  3. Step 3: Cross multiply
    141,400.80x = 195,136.56 × 77,739.84
  4. Step 4: Simplify right side
    141,400.80x = 15,169,884,952.55
  5. Step 5: Solve for x
    x = 15,169,884,952.55/141,400.80
  6. Step 6: Final answer
    x = 107,282.88

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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.