Home / 103,720,163.60-155,580,245.40-80,761,912.40

Finding the Fourth Proportional to 103,720,163.60, 155,580,245.40 and 80,761,912.40

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Solution

The fourth proportional to 103,720,163.60, 155,580,245.40 and 80,761,912.40 is: 121,142,868.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,720,163.60 : 155,580,245.40 = 80,761,912.40 : x
  2. Step 2: Convert to fraction form
    103,720,163.60/155,580,245.40 = 80,761,912.40/x
  3. Step 3: Cross multiply
    103,720,163.60x = 155,580,245.40 × 80,761,912.40
  4. Step 4: Simplify right side
    103,720,163.60x = 12,564,958,150,165,304
  5. Step 5: Solve for x
    x = 12,564,958,150,165,304/103,720,163.60
  6. Step 6: Final answer
    x = 121,142,868.60

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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.