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Finding the Fourth Proportional to 135,168.54, 186,529.28 and 74,737.59

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Solution

The fourth proportional to 135,168.54, 186,529.28 and 74,737.59 is: 103,136.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,168.54 : 186,529.28 = 74,737.59 : x
  2. Step 2: Convert to fraction form
    135,168.54/186,529.28 = 74,737.59/x
  3. Step 3: Cross multiply
    135,168.54x = 186,529.28 × 74,737.59
  4. Step 4: Simplify right side
    135,168.54x = 13,940,748,477.95
  5. Step 5: Solve for x
    x = 13,940,748,477.95/135,168.54
  6. Step 6: Final answer
    x = 103,136.04

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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.