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Finding the Fourth Proportional to 99,518.54, 137,329.35 and 54,806.54

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Solution

The fourth proportional to 99,518.54, 137,329.35 and 54,806.54 is: 75,629.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,518.54 : 137,329.35 = 54,806.54 : x
  2. Step 2: Convert to fraction form
    99,518.54/137,329.35 = 54,806.54/x
  3. Step 3: Cross multiply
    99,518.54x = 137,329.35 × 54,806.54
  4. Step 4: Simplify right side
    99,518.54x = 7,526,545,827.30
  5. Step 5: Solve for x
    x = 7,526,545,827.30/99,518.54
  6. Step 6: Final answer
    x = 75,629.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.