Home / 126,338.40-189,606.64-88,139.26

Finding the Fourth Proportional to 126,338.40, 189,606.64 and 88,139.26

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Solution

The fourth proportional to 126,338.40, 189,606.64 and 88,139.26 is: 132,277.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,338.40 : 189,606.64 = 88,139.26 : x
  2. Step 2: Convert to fraction form
    126,338.40/189,606.64 = 88,139.26/x
  3. Step 3: Cross multiply
    126,338.40x = 189,606.64 × 88,139.26
  4. Step 4: Simplify right side
    126,338.40x = 16,711,788,246.32
  5. Step 5: Solve for x
    x = 16,711,788,246.32/126,338.40
  6. Step 6: Final answer
    x = 132,277.98

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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.