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Finding the Fourth Proportional to 170,949.10, 256,218.84 and 79,641.40

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Solution

The fourth proportional to 170,949.10, 256,218.84 and 79,641.40 is: 119,366.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,949.10 : 256,218.84 = 79,641.40 : x
  2. Step 2: Convert to fraction form
    170,949.10/256,218.84 = 79,641.40/x
  3. Step 3: Cross multiply
    170,949.10x = 256,218.84 × 79,641.40
  4. Step 4: Simplify right side
    170,949.10x = 20,405,627,123.98
  5. Step 5: Solve for x
    x = 20,405,627,123.98/170,949.10
  6. Step 6: Final answer
    x = 119,366.68

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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.