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Finding the Fourth Proportional to 132,978.40, 199,424.40 and 44,216.80

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Solution

The fourth proportional to 132,978.40, 199,424.40 and 44,216.80 is: 66,310.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,978.40 : 199,424.40 = 44,216.80 : x
  2. Step 2: Convert to fraction form
    132,978.40/199,424.40 = 44,216.80/x
  3. Step 3: Cross multiply
    132,978.40x = 199,424.40 × 44,216.80
  4. Step 4: Simplify right side
    132,978.40x = 8,817,908,809.92
  5. Step 5: Solve for x
    x = 8,817,908,809.92/132,978.40
  6. Step 6: Final answer
    x = 66,310.84

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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.