Home / 215,830.10-323,769.45-66,069.20

Finding the Fourth Proportional to 215,830.10, 323,769.45 and 66,069.20

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Solution

The fourth proportional to 215,830.10, 323,769.45 and 66,069.20 is: 99,111.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,830.10 : 323,769.45 = 66,069.20 : x
  2. Step 2: Convert to fraction form
    215,830.10/323,769.45 = 66,069.20/x
  3. Step 3: Cross multiply
    215,830.10x = 323,769.45 × 66,069.20
  4. Step 4: Simplify right side
    215,830.10x = 21,391,188,545.94
  5. Step 5: Solve for x
    x = 21,391,188,545.94/215,830.10
  6. Step 6: Final answer
    x = 99,111.24

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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.