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Finding the Fourth Proportional to 147,375.61, 203,378.29 and 80,307.61

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Solution

The fourth proportional to 147,375.61, 203,378.29 and 80,307.61 is: 110,824.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,375.61 : 203,378.29 = 80,307.61 : x
  2. Step 2: Convert to fraction form
    147,375.61/203,378.29 = 80,307.61/x
  3. Step 3: Cross multiply
    147,375.61x = 203,378.29 × 80,307.61
  4. Step 4: Simplify right side
    147,375.61x = 16,332,824,395.79
  5. Step 5: Solve for x
    x = 16,332,824,395.79/147,375.61
  6. Step 6: Final answer
    x = 110,824.47

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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.