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Finding the Fourth Proportional to 121,959.15, 182,993.04 and 77,574.39

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Solution

The fourth proportional to 121,959.15, 182,993.04 and 77,574.39 is: 116,396.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,959.15 : 182,993.04 = 77,574.39 : x
  2. Step 2: Convert to fraction form
    121,959.15/182,993.04 = 77,574.39/x
  3. Step 3: Cross multiply
    121,959.15x = 182,993.04 × 77,574.39
  4. Step 4: Simplify right side
    121,959.15x = 14,195,573,452.25
  5. Step 5: Solve for x
    x = 14,195,573,452.25/121,959.15
  6. Step 6: Final answer
    x = 116,396.13

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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.