Home / 81,445,854.30-122,168,781.45-67,096,947.30

Finding the Fourth Proportional to 81,445,854.30, 122,168,781.45 and 67,096,947.30

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Solution

The fourth proportional to 81,445,854.30, 122,168,781.45 and 67,096,947.30 is: 100,645,420.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,445,854.30 : 122,168,781.45 = 67,096,947.30 : x
  2. Step 2: Convert to fraction form
    81,445,854.30/122,168,781.45 = 67,096,947.30/x
  3. Step 3: Cross multiply
    81,445,854.30x = 122,168,781.45 × 67,096,947.30
  4. Step 4: Simplify right side
    81,445,854.30x = 8,197,152,290,655,867
  5. Step 5: Solve for x
    x = 8,197,152,290,655,867/81,445,854.30
  6. Step 6: Final answer
    x = 100,645,420.95

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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.