Home / 189,364.27-261,086.32-121,269.29

Finding the Fourth Proportional to 189,364.27, 261,086.32 and 121,269.29

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Solution

The fourth proportional to 189,364.27, 261,086.32 and 121,269.29 is: 167,200.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,364.27 : 261,086.32 = 121,269.29 : x
  2. Step 2: Convert to fraction form
    189,364.27/261,086.32 = 121,269.29/x
  3. Step 3: Cross multiply
    189,364.27x = 261,086.32 × 121,269.29
  4. Step 4: Simplify right side
    189,364.27x = 31,661,752,655.11
  5. Step 5: Solve for x
    x = 31,661,752,655.11/189,364.27
  6. Step 6: Final answer
    x = 167,200.25

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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.