Home / 79,131,079.20-118,696,618.80-71,950,720.80

Finding the Fourth Proportional to 79,131,079.20, 118,696,618.80 and 71,950,720.80

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Solution

The fourth proportional to 79,131,079.20, 118,696,618.80 and 71,950,720.80 is: 107,926,081.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,131,079.20 : 118,696,618.80 = 71,950,720.80 : x
  2. Step 2: Convert to fraction form
    79,131,079.20/118,696,618.80 = 71,950,720.80/x
  3. Step 3: Cross multiply
    79,131,079.20x = 118,696,618.80 × 71,950,720.80
  4. Step 4: Simplify right side
    79,131,079.20x = 8,540,307,279,182,830
  5. Step 5: Solve for x
    x = 8,540,307,279,182,830/79,131,079.20
  6. Step 6: Final answer
    x = 107,926,081.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.