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Finding the Fourth Proportional to 136,144.53, 187,868.57 and 75,715.29

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Solution

The fourth proportional to 136,144.53, 187,868.57 and 75,715.29 is: 104,481.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,144.53 : 187,868.57 = 75,715.29 : x
  2. Step 2: Convert to fraction form
    136,144.53/187,868.57 = 75,715.29/x
  3. Step 3: Cross multiply
    136,144.53x = 187,868.57 × 75,715.29
  4. Step 4: Simplify right side
    136,144.53x = 14,224,522,880.86
  5. Step 5: Solve for x
    x = 14,224,522,880.86/136,144.53
  6. Step 6: Final answer
    x = 104,481.05

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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.