Home / 99,928.20-149,966.20-47,337.80

Finding the Fourth Proportional to 99,928.20, 149,966.20 and 47,337.80

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Solution

The fourth proportional to 99,928.20, 149,966.20 and 47,337.80 is: 71,041.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,928.20 : 149,966.20 = 47,337.80 : x
  2. Step 2: Convert to fraction form
    99,928.20/149,966.20 = 47,337.80/x
  3. Step 3: Cross multiply
    99,928.20x = 149,966.20 × 47,337.80
  4. Step 4: Simplify right side
    99,928.20x = 7,099,069,982.36
  5. Step 5: Solve for x
    x = 7,099,069,982.36/99,928.20
  6. Step 6: Final answer
    x = 71,041.71

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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.