Home / 123,619.20-185,385.60-64,435.20

Finding the Fourth Proportional to 123,619.20, 185,385.60 and 64,435.20

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Solution

The fourth proportional to 123,619.20, 185,385.60 and 64,435.20 is: 96,630.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,619.20 : 185,385.60 = 64,435.20 : x
  2. Step 2: Convert to fraction form
    123,619.20/185,385.60 = 64,435.20/x
  3. Step 3: Cross multiply
    123,619.20x = 185,385.60 × 64,435.20
  4. Step 4: Simplify right side
    123,619.20x = 11,945,358,213.12
  5. Step 5: Solve for x
    x = 11,945,358,213.12/123,619.20
  6. Step 6: Final answer
    x = 96,630.28

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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.