Home / 145,912.75-201,359.64-78,844.75

Finding the Fourth Proportional to 145,912.75, 201,359.64 and 78,844.75

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Solution

The fourth proportional to 145,912.75, 201,359.64 and 78,844.75 is: 108,805.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,912.75 : 201,359.64 = 78,844.75 : x
  2. Step 2: Convert to fraction form
    145,912.75/201,359.64 = 78,844.75/x
  3. Step 3: Cross multiply
    145,912.75x = 201,359.64 × 78,844.75
  4. Step 4: Simplify right side
    145,912.75x = 15,876,150,475.89
  5. Step 5: Solve for x
    x = 15,876,150,475.89/145,912.75
  6. Step 6: Final answer
    x = 108,805.78

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1.5x scale

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.