Home / 206,667.10-310,087.05-66,468.70

Finding the Fourth Proportional to 206,667.10, 310,087.05 and 66,468.70

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Solution

The fourth proportional to 206,667.10, 310,087.05 and 66,468.70 is: 99,730.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,667.10 : 310,087.05 = 66,468.70 : x
  2. Step 2: Convert to fraction form
    206,667.10/310,087.05 = 66,468.70/x
  3. Step 3: Cross multiply
    206,667.10x = 310,087.05 × 66,468.70
  4. Step 4: Simplify right side
    206,667.10x = 20,611,083,100.34
  5. Step 5: Solve for x
    x = 20,611,083,100.34/206,667.10
  6. Step 6: Final answer
    x = 99,730.84

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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.