Home / 80,640,123.80-120,960,185.70-73,625,102.60

Finding the Fourth Proportional to 80,640,123.80, 120,960,185.70 and 73,625,102.60

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Solution

The fourth proportional to 80,640,123.80, 120,960,185.70 and 73,625,102.60 is: 110,437,653.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,640,123.80 : 120,960,185.70 = 73,625,102.60 : x
  2. Step 2: Convert to fraction form
    80,640,123.80/120,960,185.70 = 73,625,102.60/x
  3. Step 3: Cross multiply
    80,640,123.80x = 120,960,185.70 × 73,625,102.60
  4. Step 4: Simplify right side
    80,640,123.80x = 8,905,706,082,677,552
  5. Step 5: Solve for x
    x = 8,905,706,082,677,552/80,640,123.80
  6. Step 6: Final answer
    x = 110,437,653.90

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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.