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Finding the Fourth Proportional to 178,773.86, 268,074.12 and 103,915.55

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Solution

The fourth proportional to 178,773.86, 268,074.12 and 103,915.55 is: 155,822.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,773.86 : 268,074.12 = 103,915.55 : x
  2. Step 2: Convert to fraction form
    178,773.86/268,074.12 = 103,915.55/x
  3. Step 3: Cross multiply
    178,773.86x = 268,074.12 × 103,915.55
  4. Step 4: Simplify right side
    178,773.86x = 27,857,069,620.57
  5. Step 5: Solve for x
    x = 27,857,069,620.57/178,773.86
  6. Step 6: Final answer
    x = 155,822.95

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1.5x scale

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.