Home / 109,677.20-164,580.60-80,020.40

Finding the Fourth Proportional to 109,677.20, 164,580.60 and 80,020.40

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Solution

The fourth proportional to 109,677.20, 164,580.60 and 80,020.40 is: 120,077.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,677.20 : 164,580.60 = 80,020.40 : x
  2. Step 2: Convert to fraction form
    109,677.20/164,580.60 = 80,020.40/x
  3. Step 3: Cross multiply
    109,677.20x = 164,580.60 × 80,020.40
  4. Step 4: Simplify right side
    109,677.20x = 13,169,805,444.24
  5. Step 5: Solve for x
    x = 13,169,805,444.24/109,677.20
  6. Step 6: Final answer
    x = 120,077.88

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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.