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Finding the Fourth Proportional to 100,919.30, 151,366.80 and 41,748.80

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Solution

The fourth proportional to 100,919.30, 151,366.80 and 41,748.80 is: 62,618.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,919.30 : 151,366.80 = 41,748.80 : x
  2. Step 2: Convert to fraction form
    100,919.30/151,366.80 = 41,748.80/x
  3. Step 3: Cross multiply
    100,919.30x = 151,366.80 × 41,748.80
  4. Step 4: Simplify right side
    100,919.30x = 6,319,382,259.84
  5. Step 5: Solve for x
    x = 6,319,382,259.84/100,919.30
  6. Step 6: Final answer
    x = 62,618.17

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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.