Home / 121,026.20-181,107.30-76,674.20

Finding the Fourth Proportional to 121,026.20, 181,107.30 and 76,674.20

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Solution

The fourth proportional to 121,026.20, 181,107.30 and 76,674.20 is: 114,737.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,026.20 : 181,107.30 = 76,674.20 : x
  2. Step 2: Convert to fraction form
    121,026.20/181,107.30 = 76,674.20/x
  3. Step 3: Cross multiply
    121,026.20x = 181,107.30 × 76,674.20
  4. Step 4: Simplify right side
    121,026.20x = 13,886,257,341.66
  5. Step 5: Solve for x
    x = 13,886,257,341.66/121,026.20
  6. Step 6: Final answer
    x = 114,737.61

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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.