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Finding the Fourth Proportional to 170,900.46, 256,511.52 and 86,721.03

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Solution

The fourth proportional to 170,900.46, 256,511.52 and 86,721.03 is: 130,163.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,900.46 : 256,511.52 = 86,721.03 : x
  2. Step 2: Convert to fraction form
    170,900.46/256,511.52 = 86,721.03/x
  3. Step 3: Cross multiply
    170,900.46x = 256,511.52 × 86,721.03
  4. Step 4: Simplify right side
    170,900.46x = 22,244,943,221.27
  5. Step 5: Solve for x
    x = 22,244,943,221.27/170,900.46
  6. Step 6: Final answer
    x = 130,163.16

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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.