Home / 189,772.39-261,886.94-103,731.49

Finding the Fourth Proportional to 189,772.39, 261,886.94 and 103,731.49

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Solution

The fourth proportional to 189,772.39, 261,886.94 and 103,731.49 is: 143,150.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,772.39 : 261,886.94 = 103,731.49 : x
  2. Step 2: Convert to fraction form
    189,772.39/261,886.94 = 103,731.49/x
  3. Step 3: Cross multiply
    189,772.39x = 261,886.94 × 103,731.49
  4. Step 4: Simplify right side
    189,772.39x = 27,165,921,979.08
  5. Step 5: Solve for x
    x = 27,165,921,979.08/189,772.39
  6. Step 6: Final answer
    x = 143,150.02

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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.