Home / 135,176.47-202,743.43-85,103.28

Finding the Fourth Proportional to 135,176.47, 202,743.43 and 85,103.28

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Solution

The fourth proportional to 135,176.47, 202,743.43 and 85,103.28 is: 127,641.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,176.47 : 202,743.43 = 85,103.28 : x
  2. Step 2: Convert to fraction form
    135,176.47/202,743.43 = 85,103.28/x
  3. Step 3: Cross multiply
    135,176.47x = 202,743.43 × 85,103.28
  4. Step 4: Simplify right side
    135,176.47x = 17,254,130,891.45
  5. Step 5: Solve for x
    x = 17,254,130,891.45/135,176.47
  6. Step 6: Final answer
    x = 127,641.53

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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.