Home / 137,616.05-189,865.31-80,242.40

Finding the Fourth Proportional to 137,616.05, 189,865.31 and 80,242.40

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Solution

The fourth proportional to 137,616.05, 189,865.31 and 80,242.40 is: 110,708.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,616.05 : 189,865.31 = 80,242.40 : x
  2. Step 2: Convert to fraction form
    137,616.05/189,865.31 = 80,242.40/x
  3. Step 3: Cross multiply
    137,616.05x = 189,865.31 × 80,242.40
  4. Step 4: Simplify right side
    137,616.05x = 15,235,248,224.60
  5. Step 5: Solve for x
    x = 15,235,248,224.60/137,616.05
  6. Step 6: Final answer
    x = 110,708.37

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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.