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Finding the Fourth Proportional to 189,473.76, 261,558.81 and 124,981.02

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Solution

The fourth proportional to 189,473.76, 261,558.81 and 124,981.02 is: 172,529.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,473.76 : 261,558.81 = 124,981.02 : x
  2. Step 2: Convert to fraction form
    189,473.76/261,558.81 = 124,981.02/x
  3. Step 3: Cross multiply
    189,473.76x = 261,558.81 × 124,981.02
  4. Step 4: Simplify right side
    189,473.76x = 32,689,886,863.79
  5. Step 5: Solve for x
    x = 32,689,886,863.79/189,473.76
  6. Step 6: Final answer
    x = 172,529.89

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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.