Home / 109,194.30-163,818.63-86,789.49

Finding the Fourth Proportional to 109,194.30, 163,818.63 and 86,789.49

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Solution

The fourth proportional to 109,194.30, 163,818.63 and 86,789.49 is: 130,205.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,194.30 : 163,818.63 = 86,789.49 : x
  2. Step 2: Convert to fraction form
    109,194.30/163,818.63 = 86,789.49/x
  3. Step 3: Cross multiply
    109,194.30x = 163,818.63 × 86,789.49
  4. Step 4: Simplify right side
    109,194.30x = 14,217,735,350.20
  5. Step 5: Solve for x
    x = 14,217,735,350.20/109,194.30
  6. Step 6: Final answer
    x = 130,205.84

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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.