Home / 99,460.20-149,190.30-76,909.80

Finding the Fourth Proportional to 99,460.20, 149,190.30 and 76,909.80

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Solution

The fourth proportional to 99,460.20, 149,190.30 and 76,909.80 is: 115,364.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,460.20 : 149,190.30 = 76,909.80 : x
  2. Step 2: Convert to fraction form
    99,460.20/149,190.30 = 76,909.80/x
  3. Step 3: Cross multiply
    99,460.20x = 149,190.30 × 76,909.80
  4. Step 4: Simplify right side
    99,460.20x = 11,474,196,134.94
  5. Step 5: Solve for x
    x = 11,474,196,134.94/99,460.20
  6. Step 6: Final answer
    x = 115,364.70

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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.