Home / 123,623.20-185,823.60-121,290.40

Finding the Fourth Proportional to 123,623.20, 185,823.60 and 121,290.40

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Solution

The fourth proportional to 123,623.20, 185,823.60 and 121,290.40 is: 182,317.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,623.20 : 185,823.60 = 121,290.40 : x
  2. Step 2: Convert to fraction form
    123,623.20/185,823.60 = 121,290.40/x
  3. Step 3: Cross multiply
    123,623.20x = 185,823.60 × 121,290.40
  4. Step 4: Simplify right side
    123,623.20x = 22,538,618,773.44
  5. Step 5: Solve for x
    x = 22,538,618,773.44/123,623.20
  6. Step 6: Final answer
    x = 182,317.06

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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.