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Finding the Fourth Proportional to 100,125.30, 137,935.26 and 69,855.60

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Solution

The fourth proportional to 100,125.30, 137,935.26 and 69,855.60 is: 96,234.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,125.30 : 137,935.26 = 69,855.60 : x
  2. Step 2: Convert to fraction form
    100,125.30/137,935.26 = 69,855.60/x
  3. Step 3: Cross multiply
    100,125.30x = 137,935.26 × 69,855.60
  4. Step 4: Simplify right side
    100,125.30x = 9,635,550,348.46
  5. Step 5: Solve for x
    x = 9,635,550,348.46/100,125.30
  6. Step 6: Final answer
    x = 96,234.92

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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.