Home / 137,973.92-190,456.04-80,631.92

Finding the Fourth Proportional to 137,973.92, 190,456.04 and 80,631.92

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Solution

The fourth proportional to 137,973.92, 190,456.04 and 80,631.92 is: 111,302.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,973.92 : 190,456.04 = 80,631.92 : x
  2. Step 2: Convert to fraction form
    137,973.92/190,456.04 = 80,631.92/x
  3. Step 3: Cross multiply
    137,973.92x = 190,456.04 × 80,631.92
  4. Step 4: Simplify right side
    137,973.92x = 15,356,836,858.52
  5. Step 5: Solve for x
    x = 15,356,836,858.52/137,973.92
  6. Step 6: Final answer
    x = 111,302.47

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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.