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Finding the Fourth Proportional to 121,192.98, 181,447.72 and 64,137.65

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Solution

The fourth proportional to 121,192.98, 181,447.72 and 64,137.65 is: 96,025.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,192.98 : 181,447.72 = 64,137.65 : x
  2. Step 2: Convert to fraction form
    121,192.98/181,447.72 = 64,137.65/x
  3. Step 3: Cross multiply
    121,192.98x = 181,447.72 × 64,137.65
  4. Step 4: Simplify right side
    121,192.98x = 11,637,629,981.78
  5. Step 5: Solve for x
    x = 11,637,629,981.78/121,192.98
  6. Step 6: Final answer
    x = 96,025.61

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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.