Home / 170,015.13-255,023.15-81,248.45

Finding the Fourth Proportional to 170,015.13, 255,023.15 and 81,248.45

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Solution

The fourth proportional to 170,015.13, 255,023.15 and 81,248.45 is: 121,872.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,015.13 : 255,023.15 = 81,248.45 : x
  2. Step 2: Convert to fraction form
    170,015.13/255,023.15 = 81,248.45/x
  3. Step 3: Cross multiply
    170,015.13x = 255,023.15 × 81,248.45
  4. Step 4: Simplify right side
    170,015.13x = 20,720,233,970.26
  5. Step 5: Solve for x
    x = 20,720,233,970.26/170,015.13
  6. Step 6: Final answer
    x = 121,872.88

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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.