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Finding the Fourth Proportional to 113,551.20, 169,923.60 and 98,920.80

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Solution

The fourth proportional to 113,551.20, 169,923.60 and 98,920.80 is: 148,029.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,551.20 : 169,923.60 = 98,920.80 : x
  2. Step 2: Convert to fraction form
    113,551.20/169,923.60 = 98,920.80/x
  3. Step 3: Cross multiply
    113,551.20x = 169,923.60 × 98,920.80
  4. Step 4: Simplify right side
    113,551.20x = 16,808,978,450.88
  5. Step 5: Solve for x
    x = 16,808,978,450.88/113,551.20
  6. Step 6: Final answer
    x = 148,029.95

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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.