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Finding the Fourth Proportional to 189,775.71, 261,890.21 and 104,892.77

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Solution

The fourth proportional to 189,775.71, 261,890.21 and 104,892.77 is: 144,751.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,775.71 : 261,890.21 = 104,892.77 : x
  2. Step 2: Convert to fraction form
    189,775.71/261,890.21 = 104,892.77/x
  3. Step 3: Cross multiply
    189,775.71x = 261,890.21 × 104,892.77
  4. Step 4: Simplify right side
    189,775.71x = 27,470,390,479.74
  5. Step 5: Solve for x
    x = 27,470,390,479.74/189,775.71
  6. Step 6: Final answer
    x = 144,751.88

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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.