Home / 147,741.78-221,459.40-68,791.08

Finding the Fourth Proportional to 147,741.78, 221,459.40 and 68,791.08

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Solution

The fourth proportional to 147,741.78, 221,459.40 and 68,791.08 is: 103,115.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,741.78 : 221,459.40 = 68,791.08 : x
  2. Step 2: Convert to fraction form
    147,741.78/221,459.40 = 68,791.08/x
  3. Step 3: Cross multiply
    147,741.78x = 221,459.40 × 68,791.08
  4. Step 4: Simplify right side
    147,741.78x = 15,234,431,302.15
  5. Step 5: Solve for x
    x = 15,234,431,302.15/147,741.78
  6. Step 6: Final answer
    x = 103,115.25

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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.