Home / 112,538.12-155,229.36-72,187.94

Finding the Fourth Proportional to 112,538.12, 155,229.36 and 72,187.94

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Solution

The fourth proportional to 112,538.12, 155,229.36 and 72,187.94 is: 99,572.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,538.12 : 155,229.36 = 72,187.94 : x
  2. Step 2: Convert to fraction form
    112,538.12/155,229.36 = 72,187.94/x
  3. Step 3: Cross multiply
    112,538.12x = 155,229.36 × 72,187.94
  4. Step 4: Simplify right side
    112,538.12x = 11,205,687,725.92
  5. Step 5: Solve for x
    x = 11,205,687,725.92/112,538.12
  6. Step 6: Final answer
    x = 99,572.37

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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.