Home / 138,407.57-189,756.62-135,885.23

Finding the Fourth Proportional to 138,407.57, 189,756.62 and 135,885.23

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Solution

The fourth proportional to 138,407.57, 189,756.62 and 135,885.23 is: 186,298.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,407.57 : 189,756.62 = 135,885.23 : x
  2. Step 2: Convert to fraction form
    138,407.57/189,756.62 = 135,885.23/x
  3. Step 3: Cross multiply
    138,407.57x = 189,756.62 × 135,885.23
  4. Step 4: Simplify right side
    138,407.57x = 25,785,121,952.72
  5. Step 5: Solve for x
    x = 25,785,121,952.72/138,407.57
  6. Step 6: Final answer
    x = 186,298.49

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.