Home / 215,848.30-323,744.10-66,103.60

Finding the Fourth Proportional to 215,848.30, 323,744.10 and 66,103.60

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Solution

The fourth proportional to 215,848.30, 323,744.10 and 66,103.60 is: 99,146.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,848.30 : 323,744.10 = 66,103.60 : x
  2. Step 2: Convert to fraction form
    215,848.30/323,744.10 = 66,103.60/x
  3. Step 3: Cross multiply
    215,848.30x = 323,744.10 × 66,103.60
  4. Step 4: Simplify right side
    215,848.30x = 21,400,650,488.76
  5. Step 5: Solve for x
    x = 21,400,650,488.76/215,848.30
  6. Step 6: Final answer
    x = 99,146.72

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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.