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Finding the Fourth Proportional to 188,437.05, 260,043.12 and 103,554.11

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Solution

The fourth proportional to 188,437.05, 260,043.12 and 103,554.11 is: 142,904.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,437.05 : 260,043.12 = 103,554.11 : x
  2. Step 2: Convert to fraction form
    188,437.05/260,043.12 = 103,554.11/x
  3. Step 3: Cross multiply
    188,437.05x = 260,043.12 × 103,554.11
  4. Step 4: Simplify right side
    188,437.05x = 26,928,532,553.01
  5. Step 5: Solve for x
    x = 26,928,532,553.01/188,437.05
  6. Step 6: Final answer
    x = 142,904.66

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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.