Home / 154,513.88-231,378.78-129,488.12

Finding the Fourth Proportional to 154,513.88, 231,378.78 and 129,488.12

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Solution

The fourth proportional to 154,513.88, 231,378.78 and 129,488.12 is: 193,903.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,513.88 : 231,378.78 = 129,488.12 : x
  2. Step 2: Convert to fraction form
    154,513.88/231,378.78 = 129,488.12/x
  3. Step 3: Cross multiply
    154,513.88x = 231,378.78 × 129,488.12
  4. Step 4: Simplify right side
    154,513.88x = 29,960,803,230.09
  5. Step 5: Solve for x
    x = 29,960,803,230.09/154,513.88
  6. Step 6: Final answer
    x = 193,903.64

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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.