Home / 189,161.31-261,038.75-104,278.37

Finding the Fourth Proportional to 189,161.31, 261,038.75 and 104,278.37

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Solution

The fourth proportional to 189,161.31, 261,038.75 and 104,278.37 is: 143,902.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,161.31 : 261,038.75 = 104,278.37 : x
  2. Step 2: Convert to fraction form
    189,161.31/261,038.75 = 104,278.37/x
  3. Step 3: Cross multiply
    189,161.31x = 261,038.75 × 104,278.37
  4. Step 4: Simplify right side
    189,161.31x = 27,220,695,585.16
  5. Step 5: Solve for x
    x = 27,220,695,585.16/189,161.31
  6. Step 6: Final answer
    x = 143,902.03

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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.