Home / 206,815.15-310,222.73-135,956.35

Finding the Fourth Proportional to 206,815.15, 310,222.73 and 135,956.35

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Solution

The fourth proportional to 206,815.15, 310,222.73 and 135,956.35 is: 203,934.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,815.15 : 310,222.73 = 135,956.35 : x
  2. Step 2: Convert to fraction form
    206,815.15/310,222.73 = 135,956.35/x
  3. Step 3: Cross multiply
    206,815.15x = 310,222.73 × 135,956.35
  4. Step 4: Simplify right side
    206,815.15x = 42,176,750,057.84
  5. Step 5: Solve for x
    x = 42,176,750,057.84/206,815.15
  6. Step 6: Final answer
    x = 203,934.53

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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.