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Finding the Fourth Proportional to 147,371.60, 203,372.78 and 80,303.60

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Solution

The fourth proportional to 147,371.60, 203,372.78 and 80,303.60 is: 110,818.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,371.60 : 203,372.78 = 80,303.60 : x
  2. Step 2: Convert to fraction form
    147,371.60/203,372.78 = 80,303.60/x
  3. Step 3: Cross multiply
    147,371.60x = 203,372.78 × 80,303.60
  4. Step 4: Simplify right side
    147,371.60x = 16,331,566,482.92
  5. Step 5: Solve for x
    x = 16,331,566,482.92/147,371.60
  6. Step 6: Final answer
    x = 110,818.95

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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.