Home / 112,540.12-155,232.12-72,189.94

Finding the Fourth Proportional to 112,540.12, 155,232.12 and 72,189.94

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Solution

The fourth proportional to 112,540.12, 155,232.12 and 72,189.94 is: 99,575.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,540.12 : 155,232.12 = 72,189.94 : x
  2. Step 2: Convert to fraction form
    112,540.12/155,232.12 = 72,189.94/x
  3. Step 3: Cross multiply
    112,540.12x = 155,232.12 × 72,189.94
  4. Step 4: Simplify right side
    112,540.12x = 11,206,197,428.87
  5. Step 5: Solve for x
    x = 11,206,197,428.87/112,540.12
  6. Step 6: Final answer
    x = 99,575.13

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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.