Home / 91,805,591.70-137,708,387.55-79,848,169.20

Finding the Fourth Proportional to 91,805,591.70, 137,708,387.55 and 79,848,169.20

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Solution

The fourth proportional to 91,805,591.70, 137,708,387.55 and 79,848,169.20 is: 119,772,253.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,805,591.70 : 137,708,387.55 = 79,848,169.20 : x
  2. Step 2: Convert to fraction form
    91,805,591.70/137,708,387.55 = 79,848,169.20/x
  3. Step 3: Cross multiply
    91,805,591.70x = 137,708,387.55 × 79,848,169.20
  4. Step 4: Simplify right side
    91,805,591.70x = 10,995,762,629,351,574
  5. Step 5: Solve for x
    x = 10,995,762,629,351,574/91,805,591.70
  6. Step 6: Final answer
    x = 119,772,253.80

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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.