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Finding the Fourth Proportional to 170,886.80, 256,330.20 and 76,116.80

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Solution

The fourth proportional to 170,886.80, 256,330.20 and 76,116.80 is: 114,175.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,886.80 : 256,330.20 = 76,116.80 : x
  2. Step 2: Convert to fraction form
    170,886.80/256,330.20 = 76,116.80/x
  3. Step 3: Cross multiply
    170,886.80x = 256,330.20 × 76,116.80
  4. Step 4: Simplify right side
    170,886.80x = 19,511,034,567.36
  5. Step 5: Solve for x
    x = 19,511,034,567.36/170,886.80
  6. Step 6: Final answer
    x = 114,175.20

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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.