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Finding the Fourth Proportional to 102,854.92, 154,260.76 and 39,653.32

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Solution

The fourth proportional to 102,854.92, 154,260.76 and 39,653.32 is: 59,471.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,854.92 : 154,260.76 = 39,653.32 : x
  2. Step 2: Convert to fraction form
    102,854.92/154,260.76 = 39,653.32/x
  3. Step 3: Cross multiply
    102,854.92x = 154,260.76 × 39,653.32
  4. Step 4: Simplify right side
    102,854.92x = 6,116,951,279.72
  5. Step 5: Solve for x
    x = 6,116,951,279.72/102,854.92
  6. Step 6: Final answer
    x = 59,471.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.