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Finding the Fourth Proportional to 170,721.44, 256,109.80 and 64,113.70

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Solution

The fourth proportional to 170,721.44, 256,109.80 and 64,113.70 is: 96,180.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,721.44 : 256,109.80 = 64,113.70 : x
  2. Step 2: Convert to fraction form
    170,721.44/256,109.80 = 64,113.70/x
  3. Step 3: Cross multiply
    170,721.44x = 256,109.80 × 64,113.70
  4. Step 4: Simplify right side
    170,721.44x = 16,420,146,884.26
  5. Step 5: Solve for x
    x = 16,420,146,884.26/170,721.44
  6. Step 6: Final answer
    x = 96,180.93

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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.