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Finding the Fourth Proportional to 121,603.28, 182,405.52 and 54,965.39

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Solution

The fourth proportional to 121,603.28, 182,405.52 and 54,965.39 is: 82,448.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,603.28 : 182,405.52 = 54,965.39 : x
  2. Step 2: Convert to fraction form
    121,603.28/182,405.52 = 54,965.39/x
  3. Step 3: Cross multiply
    121,603.28x = 182,405.52 × 54,965.39
  4. Step 4: Simplify right side
    121,603.28x = 10,025,989,632.93
  5. Step 5: Solve for x
    x = 10,025,989,632.93/121,603.28
  6. Step 6: Final answer
    x = 82,448.35

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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.