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Finding the Fourth Proportional to 178,416.50, 267,728.43 and 79,920.50

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Solution

The fourth proportional to 178,416.50, 267,728.43 and 79,920.50 is: 119,927.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,416.50 : 267,728.43 = 79,920.50 : x
  2. Step 2: Convert to fraction form
    178,416.50/267,728.43 = 79,920.50/x
  3. Step 3: Cross multiply
    178,416.50x = 267,728.43 × 79,920.50
  4. Step 4: Simplify right side
    178,416.50x = 21,396,989,989.82
  5. Step 5: Solve for x
    x = 21,396,989,989.82/178,416.50
  6. Step 6: Final answer
    x = 119,927.19

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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.