Home / 178,787.41-268,291.86-103,942.78

Finding the Fourth Proportional to 178,787.41, 268,291.86 and 103,942.78

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Solution

The fourth proportional to 178,787.41, 268,291.86 and 103,942.78 is: 155,978.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,787.41 : 268,291.86 = 103,942.78 : x
  2. Step 2: Convert to fraction form
    178,787.41/268,291.86 = 103,942.78/x
  3. Step 3: Cross multiply
    178,787.41x = 268,291.86 × 103,942.78
  4. Step 4: Simplify right side
    178,787.41x = 27,887,001,779.77
  5. Step 5: Solve for x
    x = 27,887,001,779.77/178,787.41
  6. Step 6: Final answer
    x = 155,978.55

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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.