Home / 137,434.20-189,655.38-80,849.40

Finding the Fourth Proportional to 137,434.20, 189,655.38 and 80,849.40

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Solution

The fourth proportional to 137,434.20, 189,655.38 and 80,849.40 is: 111,569.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,434.20 : 189,655.38 = 80,849.40 : x
  2. Step 2: Convert to fraction form
    137,434.20/189,655.38 = 80,849.40/x
  3. Step 3: Cross multiply
    137,434.20x = 189,655.38 × 80,849.40
  4. Step 4: Simplify right side
    137,434.20x = 15,333,523,679.77
  5. Step 5: Solve for x
    x = 15,333,523,679.77/137,434.20
  6. Step 6: Final answer
    x = 111,569.93

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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.