Home / 149,721.66-206,607.06-81,725.13

Finding the Fourth Proportional to 149,721.66, 206,607.06 and 81,725.13

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Solution

The fourth proportional to 149,721.66, 206,607.06 and 81,725.13 is: 112,775.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,721.66 : 206,607.06 = 81,725.13 : x
  2. Step 2: Convert to fraction form
    149,721.66/206,607.06 = 81,725.13/x
  3. Step 3: Cross multiply
    149,721.66x = 206,607.06 × 81,725.13
  4. Step 4: Simplify right side
    149,721.66x = 16,884,988,837.42
  5. Step 5: Solve for x
    x = 16,884,988,837.42/149,721.66
  6. Step 6: Final answer
    x = 112,775.86

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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.