Home / 189,721.39-261,815.61-104,838.45

Finding the Fourth Proportional to 189,721.39, 261,815.61 and 104,838.45

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Solution

The fourth proportional to 189,721.39, 261,815.61 and 104,838.45 is: 144,677.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,721.39 : 261,815.61 = 104,838.45 : x
  2. Step 2: Convert to fraction form
    189,721.39/261,815.61 = 104,838.45/x
  3. Step 3: Cross multiply
    189,721.39x = 261,815.61 × 104,838.45
  4. Step 4: Simplify right side
    189,721.39x = 27,448,342,738.20
  5. Step 5: Solve for x
    x = 27,448,342,738.20/189,721.39
  6. Step 6: Final answer
    x = 144,677.11

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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.