Home / 225,803.49-311,618.91-135,142.21

Finding the Fourth Proportional to 225,803.49, 311,618.91 and 135,142.21

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Solution

The fourth proportional to 225,803.49, 311,618.91 and 135,142.21 is: 186,502.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,803.49 : 311,618.91 = 135,142.21 : x
  2. Step 2: Convert to fraction form
    225,803.49/311,618.91 = 135,142.21/x
  3. Step 3: Cross multiply
    225,803.49x = 311,618.91 × 135,142.21
  4. Step 4: Simplify right side
    225,803.49x = 42,112,868,175.19
  5. Step 5: Solve for x
    x = 42,112,868,175.19/225,803.49
  6. Step 6: Final answer
    x = 186,502.29

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1.5x scale

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.