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Finding the Fourth Proportional to 170,288.80, 254,995.80 and 135,005.20

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Solution

The fourth proportional to 170,288.80, 254,995.80 and 135,005.20 is: 202,161.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,288.80 : 254,995.80 = 135,005.20 : x
  2. Step 2: Convert to fraction form
    170,288.80/254,995.80 = 135,005.20/x
  3. Step 3: Cross multiply
    170,288.80x = 254,995.80 × 135,005.20
  4. Step 4: Simplify right side
    170,288.80x = 34,425,758,978.16
  5. Step 5: Solve for x
    x = 34,425,758,978.16/170,288.80
  6. Step 6: Final answer
    x = 202,161.03

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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.