Home / 137,043.78-189,064.98-91,125.42

Finding the Fourth Proportional to 137,043.78, 189,064.98 and 91,125.42

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Solution

The fourth proportional to 137,043.78, 189,064.98 and 91,125.42 is: 125,716.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,043.78 : 189,064.98 = 91,125.42 : x
  2. Step 2: Convert to fraction form
    137,043.78/189,064.98 = 91,125.42/x
  3. Step 3: Cross multiply
    137,043.78x = 189,064.98 × 91,125.42
  4. Step 4: Simplify right side
    137,043.78x = 17,228,625,709.79
  5. Step 5: Solve for x
    x = 17,228,625,709.79/137,043.78
  6. Step 6: Final answer
    x = 125,716.22

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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.