Home / 170,188.60-255,282.90-81,421.24

Finding the Fourth Proportional to 170,188.60, 255,282.90 and 81,421.24

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Solution

The fourth proportional to 170,188.60, 255,282.90 and 81,421.24 is: 122,131.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,188.60 : 255,282.90 = 81,421.24 : x
  2. Step 2: Convert to fraction form
    170,188.60/255,282.90 = 81,421.24/x
  3. Step 3: Cross multiply
    170,188.60x = 255,282.90 × 81,421.24
  4. Step 4: Simplify right side
    170,188.60x = 20,785,450,268.80
  5. Step 5: Solve for x
    x = 20,785,450,268.80/170,188.60
  6. Step 6: Final answer
    x = 122,131.86

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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.