Home / 81,403,397.20-122,105,095.80-79,044,101.20

Finding the Fourth Proportional to 81,403,397.20, 122,105,095.80 and 79,044,101.20

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Solution

The fourth proportional to 81,403,397.20, 122,105,095.80 and 79,044,101.20 is: 118,566,151.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,403,397.20 : 122,105,095.80 = 79,044,101.20 : x
  2. Step 2: Convert to fraction form
    81,403,397.20/122,105,095.80 = 79,044,101.20/x
  3. Step 3: Cross multiply
    81,403,397.20x = 122,105,095.80 × 79,044,101.20
  4. Step 4: Simplify right side
    81,403,397.20x = 9,651,687,549,450,896
  5. Step 5: Solve for x
    x = 9,651,687,549,450,896/81,403,397.20
  6. Step 6: Final answer
    x = 118,566,151.80

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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.