Home / 215,890.60-323,857.50-66,129.16

Finding the Fourth Proportional to 215,890.60, 323,857.50 and 66,129.16

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Solution

The fourth proportional to 215,890.60, 323,857.50 and 66,129.16 is: 99,200.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,890.60 : 323,857.50 = 66,129.16 : x
  2. Step 2: Convert to fraction form
    215,890.60/323,857.50 = 66,129.16/x
  3. Step 3: Cross multiply
    215,890.60x = 323,857.50 × 66,129.16
  4. Step 4: Simplify right side
    215,890.60x = 21,416,424,434.70
  5. Step 5: Solve for x
    x = 21,416,424,434.70/215,890.60
  6. Step 6: Final answer
    x = 99,200.36

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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.