Home / 154,428.40-231,642.60-54,587.80

Finding the Fourth Proportional to 154,428.40, 231,642.60 and 54,587.80

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Solution

The fourth proportional to 154,428.40, 231,642.60 and 54,587.80 is: 81,881.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,428.40 : 231,642.60 = 54,587.80 : x
  2. Step 2: Convert to fraction form
    154,428.40/231,642.60 = 54,587.80/x
  3. Step 3: Cross multiply
    154,428.40x = 231,642.60 × 54,587.80
  4. Step 4: Simplify right side
    154,428.40x = 12,644,859,920.28
  5. Step 5: Solve for x
    x = 12,644,859,920.28/154,428.40
  6. Step 6: Final answer
    x = 81,881.70

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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.