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Finding the Fourth Proportional to 174,479.31, 261,743.46 and 85,736.31

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Solution

The fourth proportional to 174,479.31, 261,743.46 and 85,736.31 is: 128,616.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,479.31 : 261,743.46 = 85,736.31 : x
  2. Step 2: Convert to fraction form
    174,479.31/261,743.46 = 85,736.31/x
  3. Step 3: Cross multiply
    174,479.31x = 261,743.46 × 85,736.31
  4. Step 4: Simplify right side
    174,479.31x = 22,440,918,427.03
  5. Step 5: Solve for x
    x = 22,440,918,427.03/174,479.31
  6. Step 6: Final answer
    x = 128,616.50

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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.