Home / 163,112.40-225,079.96-91,478.58

Finding the Fourth Proportional to 163,112.40, 225,079.96 and 91,478.58

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Solution

The fourth proportional to 163,112.40, 225,079.96 and 91,478.58 is: 126,231.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,112.40 : 225,079.96 = 91,478.58 : x
  2. Step 2: Convert to fraction form
    163,112.40/225,079.96 = 91,478.58/x
  3. Step 3: Cross multiply
    163,112.40x = 225,079.96 × 91,478.58
  4. Step 4: Simplify right side
    163,112.40x = 20,589,995,127.26
  5. Step 5: Solve for x
    x = 20,589,995,127.26/163,112.40
  6. Step 6: Final answer
    x = 126,231.94

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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.