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Finding the Fourth Proportional to 100,837.40, 151,256.10 and 67,659.80

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Solution

The fourth proportional to 100,837.40, 151,256.10 and 67,659.80 is: 101,489.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,837.40 : 151,256.10 = 67,659.80 : x
  2. Step 2: Convert to fraction form
    100,837.40/151,256.10 = 67,659.80/x
  3. Step 3: Cross multiply
    100,837.40x = 151,256.10 × 67,659.80
  4. Step 4: Simplify right side
    100,837.40x = 10,233,957,474.78
  5. Step 5: Solve for x
    x = 10,233,957,474.78/100,837.40
  6. Step 6: Final answer
    x = 101,489.70

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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.