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Finding the Fourth Proportional to 188,488.95, 260,111.84 and 103,604.19

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Solution

The fourth proportional to 188,488.95, 260,111.84 and 103,604.19 is: 142,972.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,488.95 : 260,111.84 = 103,604.19 : x
  2. Step 2: Convert to fraction form
    188,488.95/260,111.84 = 103,604.19/x
  3. Step 3: Cross multiply
    188,488.95x = 260,111.84 × 103,604.19
  4. Step 4: Simplify right side
    188,488.95x = 26,948,675,974.59
  5. Step 5: Solve for x
    x = 26,948,675,974.59/188,488.95
  6. Step 6: Final answer
    x = 142,972.18

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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.