Home / 170,905.15-256,449.66-71,134.21

Finding the Fourth Proportional to 170,905.15, 256,449.66 and 71,134.21

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Solution

The fourth proportional to 170,905.15, 256,449.66 and 71,134.21 is: 106,739.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,905.15 : 256,449.66 = 71,134.21 : x
  2. Step 2: Convert to fraction form
    170,905.15/256,449.66 = 71,134.21/x
  3. Step 3: Cross multiply
    170,905.15x = 256,449.66 × 71,134.21
  4. Step 4: Simplify right side
    170,905.15x = 18,242,343,968.87
  5. Step 5: Solve for x
    x = 18,242,343,968.87/170,905.15
  6. Step 6: Final answer
    x = 106,739.58

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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.