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Finding the Fourth Proportional to 170,622.40, 256,010.40 and 81,841.60

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Solution

The fourth proportional to 170,622.40, 256,010.40 and 81,841.60 is: 122,799.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,622.40 : 256,010.40 = 81,841.60 : x
  2. Step 2: Convert to fraction form
    170,622.40/256,010.40 = 81,841.60/x
  3. Step 3: Cross multiply
    170,622.40x = 256,010.40 × 81,841.60
  4. Step 4: Simplify right side
    170,622.40x = 20,952,300,752.64
  5. Step 5: Solve for x
    x = 20,952,300,752.64/170,622.40
  6. Step 6: Final answer
    x = 122,799.24

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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.