Home / 112,529.75-155,217.89-72,179.60

Finding the Fourth Proportional to 112,529.75, 155,217.89 and 72,179.60

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Solution

The fourth proportional to 112,529.75, 155,217.89 and 72,179.60 is: 99,560.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,529.75 : 155,217.89 = 72,179.60 : x
  2. Step 2: Convert to fraction form
    112,529.75/155,217.89 = 72,179.60/x
  3. Step 3: Cross multiply
    112,529.75x = 155,217.89 × 72,179.60
  4. Step 4: Simplify right side
    112,529.75x = 11,203,565,781.54
  5. Step 5: Solve for x
    x = 11,203,565,781.54/112,529.75
  6. Step 6: Final answer
    x = 99,560.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.