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Finding the Fourth Proportional to 132,012.80, 197,970.60 and 43,269.20

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Solution

The fourth proportional to 132,012.80, 197,970.60 and 43,269.20 is: 64,887.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,012.80 : 197,970.60 = 43,269.20 : x
  2. Step 2: Convert to fraction form
    132,012.80/197,970.60 = 43,269.20/x
  3. Step 3: Cross multiply
    132,012.80x = 197,970.60 × 43,269.20
  4. Step 4: Simplify right side
    132,012.80x = 8,566,029,485.52
  5. Step 5: Solve for x
    x = 8,566,029,485.52/132,012.80
  6. Step 6: Final answer
    x = 64,887.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.