Home / 189,897.48-261,979.38-109,305.72

Finding the Fourth Proportional to 189,897.48, 261,979.38 and 109,305.72

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Solution

The fourth proportional to 189,897.48, 261,979.38 and 109,305.72 is: 150,796.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,897.48 : 261,979.38 = 109,305.72 : x
  2. Step 2: Convert to fraction form
    189,897.48/261,979.38 = 109,305.72/x
  3. Step 3: Cross multiply
    189,897.48x = 261,979.38 × 109,305.72
  4. Step 4: Simplify right side
    189,897.48x = 28,635,844,756.05
  5. Step 5: Solve for x
    x = 28,635,844,756.05/189,897.48
  6. Step 6: Final answer
    x = 150,796.34

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1.5x scale

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.