Home / 154,801.10-231,979.30-66,030.78

Finding the Fourth Proportional to 154,801.10, 231,979.30 and 66,030.78

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Solution

The fourth proportional to 154,801.10, 231,979.30 and 66,030.78 is: 98,951.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,801.10 : 231,979.30 = 66,030.78 : x
  2. Step 2: Convert to fraction form
    154,801.10/231,979.30 = 66,030.78/x
  3. Step 3: Cross multiply
    154,801.10x = 231,979.30 × 66,030.78
  4. Step 4: Simplify right side
    154,801.10x = 15,317,774,122.85
  5. Step 5: Solve for x
    x = 15,317,774,122.85/154,801.10
  6. Step 6: Final answer
    x = 98,951.33

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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.