Home / 112,529.67-155,217.78-72,179.52

Finding the Fourth Proportional to 112,529.67, 155,217.78 and 72,179.52

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Solution

The fourth proportional to 112,529.67, 155,217.78 and 72,179.52 is: 99,560.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,529.67 : 155,217.78 = 72,179.52 : x
  2. Step 2: Convert to fraction form
    112,529.67/155,217.78 = 72,179.52/x
  3. Step 3: Cross multiply
    112,529.67x = 155,217.78 × 72,179.52
  4. Step 4: Simplify right side
    112,529.67x = 11,203,544,855.87
  5. Step 5: Solve for x
    x = 11,203,544,855.87/112,529.67
  6. Step 6: Final answer
    x = 99,560.81

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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.