Home / 145,964.43-201,431.21-78,896.43

Finding the Fourth Proportional to 145,964.43, 201,431.21 and 78,896.43

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Solution

The fourth proportional to 145,964.43, 201,431.21 and 78,896.43 is: 108,877.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,964.43 : 201,431.21 = 78,896.43 : x
  2. Step 2: Convert to fraction form
    145,964.43/201,431.21 = 78,896.43/x
  3. Step 3: Cross multiply
    145,964.43x = 201,431.21 × 78,896.43
  4. Step 4: Simplify right side
    145,964.43x = 15,892,202,965.10
  5. Step 5: Solve for x
    x = 15,892,202,965.10/145,964.43
  6. Step 6: Final answer
    x = 108,877.23

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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.