Home / 189,290.31-261,216.05-104,405.55

Finding the Fourth Proportional to 189,290.31, 261,216.05 and 104,405.55

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Solution

The fourth proportional to 189,290.31, 261,216.05 and 104,405.55 is: 144,077.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,290.31 : 261,216.05 = 104,405.55 : x
  2. Step 2: Convert to fraction form
    189,290.31/261,216.05 = 104,405.55/x
  3. Step 3: Cross multiply
    189,290.31x = 261,216.05 × 104,405.55
  4. Step 4: Simplify right side
    189,290.31x = 27,272,405,369.08
  5. Step 5: Solve for x
    x = 27,272,405,369.08/189,290.31
  6. Step 6: Final answer
    x = 144,077.13

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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.