Home / 113,321.60-169,636.80-66,435.20

Finding the Fourth Proportional to 113,321.60, 169,636.80 and 66,435.20

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Solution

The fourth proportional to 113,321.60, 169,636.80 and 66,435.20 is: 99,450.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,321.60 : 169,636.80 = 66,435.20 : x
  2. Step 2: Convert to fraction form
    113,321.60/169,636.80 = 66,435.20/x
  3. Step 3: Cross multiply
    113,321.60x = 169,636.80 × 66,435.20
  4. Step 4: Simplify right side
    113,321.60x = 11,269,854,735.36
  5. Step 5: Solve for x
    x = 11,269,854,735.36/113,321.60
  6. Step 6: Final answer
    x = 99,450.19

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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.