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Finding the Fourth Proportional to 120,960.78, 181,417.48 and 114,959.76

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Solution

The fourth proportional to 120,960.78, 181,417.48 and 114,959.76 is: 172,417.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,960.78 : 181,417.48 = 114,959.76 : x
  2. Step 2: Convert to fraction form
    120,960.78/181,417.48 = 114,959.76/x
  3. Step 3: Cross multiply
    120,960.78x = 181,417.48 × 114,959.76
  4. Step 4: Simplify right side
    120,960.78x = 20,855,709,960.60
  5. Step 5: Solve for x
    x = 20,855,709,960.60/120,960.78
  6. Step 6: Final answer
    x = 172,417.13

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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.