Home / 122,435.60-183,761.40-72,453.20

Finding the Fourth Proportional to 122,435.60, 183,761.40 and 72,453.20

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Solution

The fourth proportional to 122,435.60, 183,761.40 and 72,453.20 is: 108,743.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,435.60 : 183,761.40 = 72,453.20 : x
  2. Step 2: Convert to fraction form
    122,435.60/183,761.40 = 72,453.20/x
  3. Step 3: Cross multiply
    122,435.60x = 183,761.40 × 72,453.20
  4. Step 4: Simplify right side
    122,435.60x = 13,314,101,466.48
  5. Step 5: Solve for x
    x = 13,314,101,466.48/122,435.60
  6. Step 6: Final answer
    x = 108,743.71

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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.