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Finding the Fourth Proportional to 139,832.88, 209,633.20 and 55,541.04

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Solution

The fourth proportional to 139,832.88, 209,633.20 and 55,541.04 is: 83,265.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,832.88 : 209,633.20 = 55,541.04 : x
  2. Step 2: Convert to fraction form
    139,832.88/209,633.20 = 55,541.04/x
  3. Step 3: Cross multiply
    139,832.88x = 209,633.20 × 55,541.04
  4. Step 4: Simplify right side
    139,832.88x = 11,643,245,946.53
  5. Step 5: Solve for x
    x = 11,643,245,946.53/139,832.88
  6. Step 6: Final answer
    x = 83,265.44

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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.