Home / 81,941,010.70-122,911,516.05-73,012,801.90

Finding the Fourth Proportional to 81,941,010.70, 122,911,516.05 and 73,012,801.90

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Solution

The fourth proportional to 81,941,010.70, 122,911,516.05 and 73,012,801.90 is: 109,519,202.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,941,010.70 : 122,911,516.05 = 73,012,801.90 : x
  2. Step 2: Convert to fraction form
    81,941,010.70/122,911,516.05 = 73,012,801.90/x
  3. Step 3: Cross multiply
    81,941,010.70x = 122,911,516.05 × 73,012,801.90
  4. Step 4: Simplify right side
    81,941,010.70x = 8,974,114,172,587,321
  5. Step 5: Solve for x
    x = 8,974,114,172,587,321/81,941,010.70
  6. Step 6: Final answer
    x = 109,519,202.85

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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.