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Finding the Fourth Proportional to 170,873.80, 256,310.70 and 76,103.80

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Solution

The fourth proportional to 170,873.80, 256,310.70 and 76,103.80 is: 114,155.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,873.80 : 256,310.70 = 76,103.80 : x
  2. Step 2: Convert to fraction form
    170,873.80/256,310.70 = 76,103.80/x
  3. Step 3: Cross multiply
    170,873.80x = 256,310.70 × 76,103.80
  4. Step 4: Simplify right side
    170,873.80x = 19,506,218,250.66
  5. Step 5: Solve for x
    x = 19,506,218,250.66/170,873.80
  6. Step 6: Final answer
    x = 114,155.70

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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.