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Finding the Fourth Proportional to 118,863.20, 178,251.60 and 59,679.20

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Solution

The fourth proportional to 118,863.20, 178,251.60 and 59,679.20 is: 89,497.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,863.20 : 178,251.60 = 59,679.20 : x
  2. Step 2: Convert to fraction form
    118,863.20/178,251.60 = 59,679.20/x
  3. Step 3: Cross multiply
    118,863.20x = 178,251.60 × 59,679.20
  4. Step 4: Simplify right side
    118,863.20x = 10,637,912,886.72
  5. Step 5: Solve for x
    x = 10,637,912,886.72/118,863.20
  6. Step 6: Final answer
    x = 89,497.11

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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.