Home / 170,530.12-255,717.40-81,825.40

Finding the Fourth Proportional to 170,530.12, 255,717.40 and 81,825.40

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Solution

The fourth proportional to 170,530.12, 255,717.40 and 81,825.40 is: 122,700.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,530.12 : 255,717.40 = 81,825.40 : x
  2. Step 2: Convert to fraction form
    170,530.12/255,717.40 = 81,825.40/x
  3. Step 3: Cross multiply
    170,530.12x = 255,717.40 × 81,825.40
  4. Step 4: Simplify right side
    170,530.12x = 20,924,178,541.96
  5. Step 5: Solve for x
    x = 20,924,178,541.96/170,530.12
  6. Step 6: Final answer
    x = 122,700.78

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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.