Home / 206,942.95-285,684.61-135,432.20

Finding the Fourth Proportional to 206,942.95, 285,684.61 and 135,432.20

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Solution

The fourth proportional to 206,942.95, 285,684.61 and 135,432.20 is: 186,964.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,942.95 : 285,684.61 = 135,432.20 : x
  2. Step 2: Convert to fraction form
    206,942.95/285,684.61 = 135,432.20/x
  3. Step 3: Cross multiply
    206,942.95x = 285,684.61 × 135,432.20
  4. Step 4: Simplify right side
    206,942.95x = 38,690,893,132.86
  5. Step 5: Solve for x
    x = 38,690,893,132.86/206,942.95
  6. Step 6: Final answer
    x = 186,964.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.