Home / 189,665.97-261,757.13-103,638.02

Finding the Fourth Proportional to 189,665.97, 261,757.13 and 103,638.02

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Solution

The fourth proportional to 189,665.97, 261,757.13 and 103,638.02 is: 143,030.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,665.97 : 261,757.13 = 103,638.02 : x
  2. Step 2: Convert to fraction form
    189,665.97/261,757.13 = 103,638.02/x
  3. Step 3: Cross multiply
    189,665.97x = 261,757.13 × 103,638.02
  4. Step 4: Simplify right side
    189,665.97x = 27,127,990,674.08
  5. Step 5: Solve for x
    x = 27,127,990,674.08/189,665.97
  6. Step 6: Final answer
    x = 143,030.35

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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.