Home / 112,530.12-155,218.41-72,179.97

Finding the Fourth Proportional to 112,530.12, 155,218.41 and 72,179.97

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Solution

The fourth proportional to 112,530.12, 155,218.41 and 72,179.97 is: 99,561.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,530.12 : 155,218.41 = 72,179.97 : x
  2. Step 2: Convert to fraction form
    112,530.12/155,218.41 = 72,179.97/x
  3. Step 3: Cross multiply
    112,530.12x = 155,218.41 × 72,179.97
  4. Step 4: Simplify right side
    112,530.12x = 11,203,660,177.25
  5. Step 5: Solve for x
    x = 11,203,660,177.25/112,530.12
  6. Step 6: Final answer
    x = 99,561.43

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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.