Home / 170,020.32-255,030.96-81,253.68

Finding the Fourth Proportional to 170,020.32, 255,030.96 and 81,253.68

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Solution

The fourth proportional to 170,020.32, 255,030.96 and 81,253.68 is: 121,880.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,020.32 : 255,030.96 = 81,253.68 : x
  2. Step 2: Convert to fraction form
    170,020.32/255,030.96 = 81,253.68/x
  3. Step 3: Cross multiply
    170,020.32x = 255,030.96 × 81,253.68
  4. Step 4: Simplify right side
    170,020.32x = 20,722,204,013.93
  5. Step 5: Solve for x
    x = 20,722,204,013.93/170,020.32
  6. Step 6: Final answer
    x = 121,880.75

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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.