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Finding the Fourth Proportional to 170,143.70, 255,215.55 and 143,899.70

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Solution

The fourth proportional to 170,143.70, 255,215.55 and 143,899.70 is: 215,849.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,143.70 : 255,215.55 = 143,899.70 : x
  2. Step 2: Convert to fraction form
    170,143.70/255,215.55 = 143,899.70/x
  3. Step 3: Cross multiply
    170,143.70x = 255,215.55 × 143,899.70
  4. Step 4: Simplify right side
    170,143.70x = 36,725,441,080.34
  5. Step 5: Solve for x
    x = 36,725,441,080.34/170,143.70
  6. Step 6: Final answer
    x = 215,849.55

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Similar ratio
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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.