Home / 189,631.70-261,689.02-103,589.65

Finding the Fourth Proportional to 189,631.70, 261,689.02 and 103,589.65

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Solution

The fourth proportional to 189,631.70, 261,689.02 and 103,589.65 is: 142,952.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,631.70 : 261,689.02 = 103,589.65 : x
  2. Step 2: Convert to fraction form
    189,631.70/261,689.02 = 103,589.65/x
  3. Step 3: Cross multiply
    189,631.70x = 261,689.02 × 103,589.65
  4. Step 4: Simplify right side
    189,631.70x = 27,108,273,990.64
  5. Step 5: Solve for x
    x = 27,108,273,990.64/189,631.70
  6. Step 6: Final answer
    x = 142,952.23

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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.