Home / 136,421.40-204,632.10-126,579.90

Finding the Fourth Proportional to 136,421.40, 204,632.10 and 126,579.90

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Solution

The fourth proportional to 136,421.40, 204,632.10 and 126,579.90 is: 189,869.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,421.40 : 204,632.10 = 126,579.90 : x
  2. Step 2: Convert to fraction form
    136,421.40/204,632.10 = 126,579.90/x
  3. Step 3: Cross multiply
    136,421.40x = 204,632.10 × 126,579.90
  4. Step 4: Simplify right side
    136,421.40x = 25,902,310,754.79
  5. Step 5: Solve for x
    x = 25,902,310,754.79/136,421.40
  6. Step 6: Final answer
    x = 189,869.85

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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.