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Finding the Fourth Proportional to 189,470.55, 261,468.81 and 104,587

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Solution

The fourth proportional to 189,470.55, 261,468.81 and 104,587 is: 144,329.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,470.55 : 261,468.81 = 104,587 : x
  2. Step 2: Convert to fraction form
    189,470.55/261,468.81 = 104,587/x
  3. Step 3: Cross multiply
    189,470.55x = 261,468.81 × 104,587
  4. Step 4: Simplify right side
    189,470.55x = 27,346,238,431.47
  5. Step 5: Solve for x
    x = 27,346,238,431.47/189,470.55
  6. Step 6: Final answer
    x = 144,329.76

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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.