Home / 121,107.20-181,806.60-120,232.40

Finding the Fourth Proportional to 121,107.20, 181,806.60 and 120,232.40

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Solution

The fourth proportional to 121,107.20, 181,806.60 and 120,232.40 is: 180,493.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,107.20 : 181,806.60 = 120,232.40 : x
  2. Step 2: Convert to fraction form
    121,107.20/181,806.60 = 120,232.40/x
  3. Step 3: Cross multiply
    121,107.20x = 181,806.60 × 120,232.40
  4. Step 4: Simplify right side
    121,107.20x = 21,859,043,853.84
  5. Step 5: Solve for x
    x = 21,859,043,853.84/121,107.20
  6. Step 6: Final answer
    x = 180,493.35

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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.