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Finding the Fourth Proportional to 189,161.39, 261,044.47 and 104,281.49

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Solution

The fourth proportional to 189,161.39, 261,044.47 and 104,281.49 is: 143,909.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,161.39 : 261,044.47 = 104,281.49 : x
  2. Step 2: Convert to fraction form
    189,161.39/261,044.47 = 104,281.49/x
  3. Step 3: Cross multiply
    189,161.39x = 261,044.47 × 104,281.49
  4. Step 4: Simplify right side
    189,161.39x = 27,222,107,070.82
  5. Step 5: Solve for x
    x = 27,222,107,070.82/189,161.39
  6. Step 6: Final answer
    x = 143,909.42

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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.