Home / 83,856.40-125,565.90-79,919.80

Finding the Fourth Proportional to 83,856.40, 125,565.90 and 79,919.80

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Solution

The fourth proportional to 83,856.40, 125,565.90 and 79,919.80 is: 119,671.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,856.40 : 125,565.90 = 79,919.80 : x
  2. Step 2: Convert to fraction form
    83,856.40/125,565.90 = 79,919.80/x
  3. Step 3: Cross multiply
    83,856.40x = 125,565.90 × 79,919.80
  4. Step 4: Simplify right side
    83,856.40x = 10,035,201,614.82
  5. Step 5: Solve for x
    x = 10,035,201,614.82/83,856.40
  6. Step 6: Final answer
    x = 119,671.27

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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.