Home / 105,612,897.80-158,419,346.70-80,103,729.80

Finding the Fourth Proportional to 105,612,897.80, 158,419,346.70 and 80,103,729.80

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Solution

The fourth proportional to 105,612,897.80, 158,419,346.70 and 80,103,729.80 is: 120,155,594.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,612,897.80 : 158,419,346.70 = 80,103,729.80 : x
  2. Step 2: Convert to fraction form
    105,612,897.80/158,419,346.70 = 80,103,729.80/x
  3. Step 3: Cross multiply
    105,612,897.80x = 158,419,346.70 × 80,103,729.80
  4. Step 4: Simplify right side
    105,612,897.80x = 12,689,980,543,149,320
  5. Step 5: Solve for x
    x = 12,689,980,543,149,320/105,612,897.80
  6. Step 6: Final answer
    x = 120,155,594.70

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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.