Home / 78,760,104.30-118,140,156.45-67,989,566.70

Finding the Fourth Proportional to 78,760,104.30, 118,140,156.45 and 67,989,566.70

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Solution

The fourth proportional to 78,760,104.30, 118,140,156.45 and 67,989,566.70 is: 101,984,350.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,760,104.30 : 118,140,156.45 = 67,989,566.70 : x
  2. Step 2: Convert to fraction form
    78,760,104.30/118,140,156.45 = 67,989,566.70/x
  3. Step 3: Cross multiply
    78,760,104.30x = 118,140,156.45 × 67,989,566.70
  4. Step 4: Simplify right side
    78,760,104.30x = 8,032,298,046,905,711
  5. Step 5: Solve for x
    x = 8,032,298,046,905,711/78,760,104.30
  6. Step 6: Final answer
    x = 101,984,350.05

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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.