Home / 189,721.89-261,816.30-104,838.95

Finding the Fourth Proportional to 189,721.89, 261,816.30 and 104,838.95

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Solution

The fourth proportional to 189,721.89, 261,816.30 and 104,838.95 is: 144,677.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,721.89 : 261,816.30 = 104,838.95 : x
  2. Step 2: Convert to fraction form
    189,721.89/261,816.30 = 104,838.95/x
  3. Step 3: Cross multiply
    189,721.89x = 261,816.30 × 104,838.95
  4. Step 4: Simplify right side
    189,721.89x = 27,448,546,639.43
  5. Step 5: Solve for x
    x = 27,448,546,639.43/189,721.89
  6. Step 6: Final answer
    x = 144,677.81

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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.