Home / 78,760,105.80-118,140,158.70-67,989,568.20

Finding the Fourth Proportional to 78,760,105.80, 118,140,158.70 and 67,989,568.20

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Solution

The fourth proportional to 78,760,105.80, 118,140,158.70 and 67,989,568.20 is: 101,984,352.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,760,105.80 : 118,140,158.70 = 67,989,568.20 : x
  2. Step 2: Convert to fraction form
    78,760,105.80/118,140,158.70 = 67,989,568.20/x
  3. Step 3: Cross multiply
    78,760,105.80x = 118,140,158.70 × 67,989,568.20
  4. Step 4: Simplify right side
    78,760,105.80x = 8,032,298,377,092,474
  5. Step 5: Solve for x
    x = 8,032,298,377,092,474/78,760,105.80
  6. Step 6: Final answer
    x = 101,984,352.30

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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.