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Finding the Fourth Proportional to 170,838.80, 256,258.20 and 76,068.80

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Solution

The fourth proportional to 170,838.80, 256,258.20 and 76,068.80 is: 114,103.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,838.80 : 256,258.20 = 76,068.80 : x
  2. Step 2: Convert to fraction form
    170,838.80/256,258.20 = 76,068.80/x
  3. Step 3: Cross multiply
    170,838.80x = 256,258.20 × 76,068.80
  4. Step 4: Simplify right side
    170,838.80x = 19,493,253,764.16
  5. Step 5: Solve for x
    x = 19,493,253,764.16/170,838.80
  6. Step 6: Final answer
    x = 114,103.20

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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.