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Finding the Fourth Proportional to 189,680.88, 261,762.36 and 104,799.90

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Solution

The fourth proportional to 189,680.88, 261,762.36 and 104,799.90 is: 144,625.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,680.88 : 261,762.36 = 104,799.90 : x
  2. Step 2: Convert to fraction form
    189,680.88/261,762.36 = 104,799.90/x
  3. Step 3: Cross multiply
    189,680.88x = 261,762.36 × 104,799.90
  4. Step 4: Simplify right side
    189,680.88x = 27,432,669,151.76
  5. Step 5: Solve for x
    x = 27,432,669,151.76/189,680.88
  6. Step 6: Final answer
    x = 144,625.38

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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.