Home / 209,079.24-312,843.81-124,885.20

Finding the Fourth Proportional to 209,079.24, 312,843.81 and 124,885.20

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Solution

The fourth proportional to 209,079.24, 312,843.81 and 124,885.20 is: 186,864.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,079.24 : 312,843.81 = 124,885.20 : x
  2. Step 2: Convert to fraction form
    209,079.24/312,843.81 = 124,885.20/x
  3. Step 3: Cross multiply
    209,079.24x = 312,843.81 × 124,885.20
  4. Step 4: Simplify right side
    209,079.24x = 39,069,561,780.61
  5. Step 5: Solve for x
    x = 39,069,561,780.61/209,079.24
  6. Step 6: Final answer
    x = 186,864.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.