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Finding the Fourth Proportional to 225,990.61, 311,869.58 and 124,013.23

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Solution

The fourth proportional to 225,990.61, 311,869.58 and 124,013.23 is: 171,139.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,990.61 : 311,869.58 = 124,013.23 : x
  2. Step 2: Convert to fraction form
    225,990.61/311,869.58 = 124,013.23/x
  3. Step 3: Cross multiply
    225,990.61x = 311,869.58 × 124,013.23
  4. Step 4: Simplify right side
    225,990.61x = 38,675,952,554.80
  5. Step 5: Solve for x
    x = 38,675,952,554.80/225,990.61
  6. Step 6: Final answer
    x = 171,139.65

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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.