Home / 189,552.47-261,687.47-129,211.74

Finding the Fourth Proportional to 189,552.47, 261,687.47 and 129,211.74

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Solution

The fourth proportional to 189,552.47, 261,687.47 and 129,211.74 is: 178,383.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,552.47 : 261,687.47 = 129,211.74 : x
  2. Step 2: Convert to fraction form
    189,552.47/261,687.47 = 129,211.74/x
  3. Step 3: Cross multiply
    189,552.47x = 261,687.47 × 129,211.74
  4. Step 4: Simplify right side
    189,552.47x = 33,813,092,688.84
  5. Step 5: Solve for x
    x = 33,813,092,688.84/189,552.47
  6. Step 6: Final answer
    x = 178,383.82

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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.