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Finding the Fourth Proportional to 109,659.56, 151,328.92 and 61,914.92

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Solution

The fourth proportional to 109,659.56, 151,328.92 and 61,914.92 is: 85,441.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,659.56 : 151,328.92 = 61,914.92 : x
  2. Step 2: Convert to fraction form
    109,659.56/151,328.92 = 61,914.92/x
  3. Step 3: Cross multiply
    109,659.56x = 151,328.92 × 61,914.92
  4. Step 4: Simplify right side
    109,659.56x = 9,369,517,975.49
  5. Step 5: Solve for x
    x = 9,369,517,975.49/109,659.56
  6. Step 6: Final answer
    x = 85,441.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.