Home / 215,916.49-323,921.21-66,167.13

Finding the Fourth Proportional to 215,916.49, 323,921.21 and 66,167.13

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Solution

The fourth proportional to 215,916.49, 323,921.21 and 66,167.13 is: 99,264.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,916.49 : 323,921.21 = 66,167.13 : x
  2. Step 2: Convert to fraction form
    215,916.49/323,921.21 = 66,167.13/x
  3. Step 3: Cross multiply
    215,916.49x = 323,921.21 × 66,167.13
  4. Step 4: Simplify right side
    215,916.49x = 21,432,936,811.83
  5. Step 5: Solve for x
    x = 21,432,936,811.83/215,916.49
  6. Step 6: Final answer
    x = 99,264.94

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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.