Home / 99,815,999.60-149,712,940.20-81,833,740.40

Finding the Fourth Proportional to 99,815,999.60, 149,712,940.20 and 81,833,740.40

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Solution

The fourth proportional to 99,815,999.60, 149,712,940.20 and 81,833,740.40 is: 122,741,543.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,815,999.60 : 149,712,940.20 = 81,833,740.40 : x
  2. Step 2: Convert to fraction form
    99,815,999.60/149,712,940.20 = 81,833,740.40/x
  3. Step 3: Cross multiply
    99,815,999.60x = 149,712,940.20 × 81,833,740.40
  4. Step 4: Simplify right side
    99,815,999.60x = 12,251,569,882,847,524
  5. Step 5: Solve for x
    x = 12,251,569,882,847,524/99,815,999.60
  6. Step 6: Final answer
    x = 122,741,543.76

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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.