Home / 137,201.42-189,277.88-80,587.28

Finding the Fourth Proportional to 137,201.42, 189,277.88 and 80,587.28

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Solution

The fourth proportional to 137,201.42, 189,277.88 and 80,587.28 is: 111,175.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,201.42 : 189,277.88 = 80,587.28 : x
  2. Step 2: Convert to fraction form
    137,201.42/189,277.88 = 80,587.28/x
  3. Step 3: Cross multiply
    137,201.42x = 189,277.88 × 80,587.28
  4. Step 4: Simplify right side
    137,201.42x = 15,253,389,513.37
  5. Step 5: Solve for x
    x = 15,253,389,513.37/137,201.42
  6. Step 6: Final answer
    x = 111,175.16

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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.