Home / 83,904.45-125,709.04-78,909.92

Finding the Fourth Proportional to 83,904.45, 125,709.04 and 78,909.92

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Solution

The fourth proportional to 83,904.45, 125,709.04 and 78,909.92 is: 118,226.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,904.45 : 125,709.04 = 78,909.92 : x
  2. Step 2: Convert to fraction form
    83,904.45/125,709.04 = 78,909.92/x
  3. Step 3: Cross multiply
    83,904.45x = 125,709.04 × 78,909.92
  4. Step 4: Simplify right side
    83,904.45x = 9,919,690,289.68
  5. Step 5: Solve for x
    x = 9,919,690,289.68/83,904.45
  6. Step 6: Final answer
    x = 118,226.03

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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.