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Finding the Fourth Proportional to 99,274.95, 136,865.27 and 67,388.49

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Solution

The fourth proportional to 99,274.95, 136,865.27 and 67,388.49 is: 92,905.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,274.95 : 136,865.27 = 67,388.49 : x
  2. Step 2: Convert to fraction form
    99,274.95/136,865.27 = 67,388.49/x
  3. Step 3: Cross multiply
    99,274.95x = 136,865.27 × 67,388.49
  4. Step 4: Simplify right side
    99,274.95x = 9,223,143,541.80
  5. Step 5: Solve for x
    x = 9,223,143,541.80/99,274.95
  6. Step 6: Final answer
    x = 92,905.04

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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.