Home / 189,830.25-261,971.21-104,952.78

Finding the Fourth Proportional to 189,830.25, 261,971.21 and 104,952.78

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Solution

The fourth proportional to 189,830.25, 261,971.21 and 104,952.78 is: 144,837.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,830.25 : 261,971.21 = 104,952.78 : x
  2. Step 2: Convert to fraction form
    189,830.25/261,971.21 = 104,952.78/x
  3. Step 3: Cross multiply
    189,830.25x = 261,971.21 × 104,952.78
  4. Step 4: Simplify right side
    189,830.25x = 27,494,607,031.85
  5. Step 5: Solve for x
    x = 27,494,607,031.85/189,830.25
  6. Step 6: Final answer
    x = 144,837.86

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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.