Home / 206,869.21-310,353.81-71,913.79

Finding the Fourth Proportional to 206,869.21, 310,353.81 and 71,913.79

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Solution

The fourth proportional to 206,869.21, 310,353.81 and 71,913.79 is: 107,888.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,869.21 : 310,353.81 = 71,913.79 : x
  2. Step 2: Convert to fraction form
    206,869.21/310,353.81 = 71,913.79/x
  3. Step 3: Cross multiply
    206,869.21x = 310,353.81 × 71,913.79
  4. Step 4: Simplify right side
    206,869.21x = 22,318,718,718.04
  5. Step 5: Solve for x
    x = 22,318,718,718.04/206,869.21
  6. Step 6: Final answer
    x = 107,888.06

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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.