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Finding the Fourth Proportional to 170,753.60, 256,276.20 and 76,129.40

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Solution

The fourth proportional to 170,753.60, 256,276.20 and 76,129.40 is: 114,259.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,753.60 : 256,276.20 = 76,129.40 : x
  2. Step 2: Convert to fraction form
    170,753.60/256,276.20 = 76,129.40/x
  3. Step 3: Cross multiply
    170,753.60x = 256,276.20 × 76,129.40
  4. Step 4: Simplify right side
    170,753.60x = 19,510,153,340.28
  5. Step 5: Solve for x
    x = 19,510,153,340.28/170,753.60
  6. Step 6: Final answer
    x = 114,259.10

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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.