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Finding the Fourth Proportional to 100,569.75, 150,854.55 and 25,687.21

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Solution

The fourth proportional to 100,569.75, 150,854.55 and 25,687.21 is: 38,530.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,569.75 : 150,854.55 = 25,687.21 : x
  2. Step 2: Convert to fraction form
    100,569.75/150,854.55 = 25,687.21/x
  3. Step 3: Cross multiply
    100,569.75x = 150,854.55 × 25,687.21
  4. Step 4: Simplify right side
    100,569.75x = 3,875,032,505.31
  5. Step 5: Solve for x
    x = 3,875,032,505.31/100,569.75
  6. Step 6: Final answer
    x = 38,530.80

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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.