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Finding the Fourth Proportional to 138,606.92, 191,277.66 and 74,944.76

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Solution

The fourth proportional to 138,606.92, 191,277.66 and 74,944.76 is: 103,423.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,606.92 : 191,277.66 = 74,944.76 : x
  2. Step 2: Convert to fraction form
    138,606.92/191,277.66 = 74,944.76/x
  3. Step 3: Cross multiply
    138,606.92x = 191,277.66 × 74,944.76
  4. Step 4: Simplify right side
    138,606.92x = 14,335,258,322.06
  5. Step 5: Solve for x
    x = 14,335,258,322.06/138,606.92
  6. Step 6: Final answer
    x = 103,423.83

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1.5x scale

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.