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Finding the Fourth Proportional to 100,366.84, 138,496.26 and 57,939.04

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Solution

The fourth proportional to 100,366.84, 138,496.26 and 57,939.04 is: 79,950.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,366.84 : 138,496.26 = 57,939.04 : x
  2. Step 2: Convert to fraction form
    100,366.84/138,496.26 = 57,939.04/x
  3. Step 3: Cross multiply
    100,366.84x = 138,496.26 × 57,939.04
  4. Step 4: Simplify right side
    100,366.84x = 8,024,340,347.99
  5. Step 5: Solve for x
    x = 8,024,340,347.99/100,366.84
  6. Step 6: Final answer
    x = 79,950.11

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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.