Home / 109,628.22-151,316.20-61,909.50

Finding the Fourth Proportional to 109,628.22, 151,316.20 and 61,909.50

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Solution

The fourth proportional to 109,628.22, 151,316.20 and 61,909.50 is: 85,451.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,628.22 : 151,316.20 = 61,909.50 : x
  2. Step 2: Convert to fraction form
    109,628.22/151,316.20 = 61,909.50/x
  3. Step 3: Cross multiply
    109,628.22x = 151,316.20 × 61,909.50
  4. Step 4: Simplify right side
    109,628.22x = 9,367,910,283.90
  5. Step 5: Solve for x
    x = 9,367,910,283.90/109,628.22
  6. Step 6: Final answer
    x = 85,451.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.