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Finding the Fourth Proportional to 170,256.52, 255,343.67 and 75,434.28

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Solution

The fourth proportional to 170,256.52, 255,343.67 and 75,434.28 is: 113,133.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,256.52 : 255,343.67 = 75,434.28 : x
  2. Step 2: Convert to fraction form
    170,256.52/255,343.67 = 75,434.28/x
  3. Step 3: Cross multiply
    170,256.52x = 255,343.67 × 75,434.28
  4. Step 4: Simplify right side
    170,256.52x = 19,261,665,899.01
  5. Step 5: Solve for x
    x = 19,261,665,899.01/170,256.52
  6. Step 6: Final answer
    x = 113,133.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.