Home / 154,221.40-231,332.10-71,277.40

Finding the Fourth Proportional to 154,221.40, 231,332.10 and 71,277.40

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Solution

The fourth proportional to 154,221.40, 231,332.10 and 71,277.40 is: 106,916.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,221.40 : 231,332.10 = 71,277.40 : x
  2. Step 2: Convert to fraction form
    154,221.40/231,332.10 = 71,277.40/x
  3. Step 3: Cross multiply
    154,221.40x = 231,332.10 × 71,277.40
  4. Step 4: Simplify right side
    154,221.40x = 16,488,750,624.54
  5. Step 5: Solve for x
    x = 16,488,750,624.54/154,221.40
  6. Step 6: Final answer
    x = 106,916.10

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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.