Home / 83,001,021.40-124,501,532.10-81,867,280.60

Finding the Fourth Proportional to 83,001,021.40, 124,501,532.10 and 81,867,280.60

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Solution

The fourth proportional to 83,001,021.40, 124,501,532.10 and 81,867,280.60 is: 122,800,920.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,001,021.40 : 124,501,532.10 = 81,867,280.60 : x
  2. Step 2: Convert to fraction form
    83,001,021.40/124,501,532.10 = 81,867,280.60/x
  3. Step 3: Cross multiply
    83,001,021.40x = 124,501,532.10 × 81,867,280.60
  4. Step 4: Simplify right side
    83,001,021.40x = 10,192,601,863,560,606
  5. Step 5: Solve for x
    x = 10,192,601,863,560,606/83,001,021.40
  6. Step 6: Final answer
    x = 122,800,920.90

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1.5x scale

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.