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Finding the Fourth Proportional to 187,102.15, 280,863.55 and 74,861.55

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Solution

The fourth proportional to 187,102.15, 280,863.55 and 74,861.55 is: 112,376.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,102.15 : 280,863.55 = 74,861.55 : x
  2. Step 2: Convert to fraction form
    187,102.15/280,863.55 = 74,861.55/x
  3. Step 3: Cross multiply
    187,102.15x = 280,863.55 × 74,861.55
  4. Step 4: Simplify right side
    187,102.15x = 21,025,880,691.50
  5. Step 5: Solve for x
    x = 21,025,880,691.50/187,102.15
  6. Step 6: Final answer
    x = 112,376.48

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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.