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Finding the Fourth Proportional to 100,641.64, 150,981.66 and 38,306.92

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Solution

The fourth proportional to 100,641.64, 150,981.66 and 38,306.92 is: 57,467.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,641.64 : 150,981.66 = 38,306.92 : x
  2. Step 2: Convert to fraction form
    100,641.64/150,981.66 = 38,306.92/x
  3. Step 3: Cross multiply
    100,641.64x = 150,981.66 × 38,306.92
  4. Step 4: Simplify right side
    100,641.64x = 5,783,642,371.09
  5. Step 5: Solve for x
    x = 5,783,642,371.09/100,641.64
  6. Step 6: Final answer
    x = 57,467.69

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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.