Home / 91,867,775.60-137,801,663.40-81,823,540.70

Finding the Fourth Proportional to 91,867,775.60, 137,801,663.40 and 81,823,540.70

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Solution

The fourth proportional to 91,867,775.60, 137,801,663.40 and 81,823,540.70 is: 122,735,311.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,867,775.60 : 137,801,663.40 = 81,823,540.70 : x
  2. Step 2: Convert to fraction form
    91,867,775.60/137,801,663.40 = 81,823,540.70/x
  3. Step 3: Cross multiply
    91,867,775.60x = 137,801,663.40 × 81,823,540.70
  4. Step 4: Simplify right side
    91,867,775.60x = 11,275,420,013,737,602
  5. Step 5: Solve for x
    x = 11,275,420,013,737,602/91,867,775.60
  6. Step 6: Final answer
    x = 122,735,311.05

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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.