Home / 121,311,223.20-181,966,834.80-75,394,720.80

Finding the Fourth Proportional to 121,311,223.20, 181,966,834.80 and 75,394,720.80

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Solution

The fourth proportional to 121,311,223.20, 181,966,834.80 and 75,394,720.80 is: 113,092,081.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,311,223.20 : 181,966,834.80 = 75,394,720.80 : x
  2. Step 2: Convert to fraction form
    121,311,223.20/181,966,834.80 = 75,394,720.80/x
  3. Step 3: Cross multiply
    121,311,223.20x = 181,966,834.80 × 75,394,720.80
  4. Step 4: Simplify right side
    121,311,223.20x = 13,719,338,704,605,724
  5. Step 5: Solve for x
    x = 13,719,338,704,605,724/121,311,223.20
  6. Step 6: Final answer
    x = 113,092,081.20

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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.