Home / 149,345.78-206,125.36-85,725.14

Finding the Fourth Proportional to 149,345.78, 206,125.36 and 85,725.14

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Solution

The fourth proportional to 149,345.78, 206,125.36 and 85,725.14 is: 118,316.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,345.78 : 206,125.36 = 85,725.14 : x
  2. Step 2: Convert to fraction form
    149,345.78/206,125.36 = 85,725.14/x
  3. Step 3: Cross multiply
    149,345.78x = 206,125.36 × 85,725.14
  4. Step 4: Simplify right side
    149,345.78x = 17,670,124,098.61
  5. Step 5: Solve for x
    x = 17,670,124,098.61/149,345.78
  6. Step 6: Final answer
    x = 118,316.87

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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.