Home / 109,315.11-163,602.30-67,221.85

Finding the Fourth Proportional to 109,315.11, 163,602.30 and 67,221.85

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Solution

The fourth proportional to 109,315.11, 163,602.30 and 67,221.85 is: 100,605.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,315.11 : 163,602.30 = 67,221.85 : x
  2. Step 2: Convert to fraction form
    109,315.11/163,602.30 = 67,221.85/x
  3. Step 3: Cross multiply
    109,315.11x = 163,602.30 × 67,221.85
  4. Step 4: Simplify right side
    109,315.11x = 10,997,649,270.26
  5. Step 5: Solve for x
    x = 10,997,649,270.26/109,315.11
  6. Step 6: Final answer
    x = 100,605.02

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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.