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Finding the Fourth Proportional to 163,112.42, 225,107.40 and 90,529

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Solution

The fourth proportional to 163,112.42, 225,107.40 and 90,529 is: 124,936.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,112.42 : 225,107.40 = 90,529 : x
  2. Step 2: Convert to fraction form
    163,112.42/225,107.40 = 90,529/x
  3. Step 3: Cross multiply
    163,112.42x = 225,107.40 × 90,529
  4. Step 4: Simplify right side
    163,112.42x = 20,378,747,814.60
  5. Step 5: Solve for x
    x = 20,378,747,814.60/163,112.42
  6. Step 6: Final answer
    x = 124,936.82

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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.