Home / 206,725.13-310,087.76-66,483.75

Finding the Fourth Proportional to 206,725.13, 310,087.76 and 66,483.75

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Solution

The fourth proportional to 206,725.13, 310,087.76 and 66,483.75 is: 99,725.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,725.13 : 310,087.76 = 66,483.75 : x
  2. Step 2: Convert to fraction form
    206,725.13/310,087.76 = 66,483.75/x
  3. Step 3: Cross multiply
    206,725.13x = 310,087.76 × 66,483.75
  4. Step 4: Simplify right side
    206,725.13x = 20,615,796,781.48
  5. Step 5: Solve for x
    x = 20,615,796,781.48/206,725.13
  6. Step 6: Final answer
    x = 99,725.65

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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.