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Finding the Fourth Proportional to 163,557.99, 225,690.39 and 90,942.72

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Solution

The fourth proportional to 163,557.99, 225,690.39 and 90,942.72 is: 125,490.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,557.99 : 225,690.39 = 90,942.72 : x
  2. Step 2: Convert to fraction form
    163,557.99/225,690.39 = 90,942.72/x
  3. Step 3: Cross multiply
    163,557.99x = 225,690.39 × 90,942.72
  4. Step 4: Simplify right side
    163,557.99x = 20,524,897,944.46
  5. Step 5: Solve for x
    x = 20,524,897,944.46/163,557.99
  6. Step 6: Final answer
    x = 125,490.04

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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.