Home / 126,187.83-189,282.31-31,417.90

Finding the Fourth Proportional to 126,187.83, 189,282.31 and 31,417.90

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Solution

The fourth proportional to 126,187.83, 189,282.31 and 31,417.90 is: 47,126.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,187.83 : 189,282.31 = 31,417.90 : x
  2. Step 2: Convert to fraction form
    126,187.83/189,282.31 = 31,417.90/x
  3. Step 3: Cross multiply
    126,187.83x = 189,282.31 × 31,417.90
  4. Step 4: Simplify right side
    126,187.83x = 5,946,852,135.60
  5. Step 5: Solve for x
    x = 5,946,852,135.60/126,187.83
  6. Step 6: Final answer
    x = 47,126.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.