Home / 218,113.70-327,171.05-66,312.10

Finding the Fourth Proportional to 218,113.70, 327,171.05 and 66,312.10

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Solution

The fourth proportional to 218,113.70, 327,171.05 and 66,312.10 is: 99,468.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,113.70 : 327,171.05 = 66,312.10 : x
  2. Step 2: Convert to fraction form
    218,113.70/327,171.05 = 66,312.10/x
  3. Step 3: Cross multiply
    218,113.70x = 327,171.05 × 66,312.10
  4. Step 4: Simplify right side
    218,113.70x = 21,695,399,710.78
  5. Step 5: Solve for x
    x = 21,695,399,710.78/218,113.70
  6. Step 6: Final answer
    x = 99,468.31

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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.