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Finding the Fourth Proportional to 170,941.70, 256,412.55 and 82,368.20

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Solution

The fourth proportional to 170,941.70, 256,412.55 and 82,368.20 is: 123,552.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,941.70 : 256,412.55 = 82,368.20 : x
  2. Step 2: Convert to fraction form
    170,941.70/256,412.55 = 82,368.20/x
  3. Step 3: Cross multiply
    170,941.70x = 256,412.55 × 82,368.20
  4. Step 4: Simplify right side
    170,941.70x = 21,120,240,200.91
  5. Step 5: Solve for x
    x = 21,120,240,200.91/170,941.70
  6. Step 6: Final answer
    x = 123,552.30

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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.