Home / 225,639.48-311,371.80-135,045.36

Finding the Fourth Proportional to 225,639.48, 311,371.80 and 135,045.36

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Solution

The fourth proportional to 225,639.48, 311,371.80 and 135,045.36 is: 186,356.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,639.48 : 311,371.80 = 135,045.36 : x
  2. Step 2: Convert to fraction form
    225,639.48/311,371.80 = 135,045.36/x
  3. Step 3: Cross multiply
    225,639.48x = 311,371.80 × 135,045.36
  4. Step 4: Simplify right side
    225,639.48x = 42,049,316,824.85
  5. Step 5: Solve for x
    x = 42,049,316,824.85/225,639.48
  6. Step 6: Final answer
    x = 186,356.20

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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.