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Finding the Fourth Proportional to 79,280,149.20, 118,920,223.80 and 79,280,149.20

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Solution

The fourth proportional to 79,280,149.20, 118,920,223.80 and 79,280,149.20 is: 118,920,223.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,280,149.20 : 118,920,223.80 = 79,280,149.20 : x
  2. Step 2: Convert to fraction form
    79,280,149.20/118,920,223.80 = 79,280,149.20/x
  3. Step 3: Cross multiply
    79,280,149.20x = 118,920,223.80 × 79,280,149.20
  4. Step 4: Simplify right side
    79,280,149.20x = 9,428,013,085,761,392
  5. Step 5: Solve for x
    x = 9,428,013,085,761,392/79,280,149.20
  6. Step 6: Final answer
    x = 118,920,223.80

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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.