Home / 149,621.66-206,476.82-85,090.91

Finding the Fourth Proportional to 149,621.66, 206,476.82 and 85,090.91

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Solution

The fourth proportional to 149,621.66, 206,476.82 and 85,090.91 is: 117,424.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,621.66 : 206,476.82 = 85,090.91 : x
  2. Step 2: Convert to fraction form
    149,621.66/206,476.82 = 85,090.91/x
  3. Step 3: Cross multiply
    149,621.66x = 206,476.82 × 85,090.91
  4. Step 4: Simplify right side
    149,621.66x = 17,569,301,350.42
  5. Step 5: Solve for x
    x = 17,569,301,350.42/149,621.66
  6. Step 6: Final answer
    x = 117,424.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.