Home / 138,328.13-190,897.22-80,973.11

Finding the Fourth Proportional to 138,328.13, 190,897.22 and 80,973.11

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Solution

The fourth proportional to 138,328.13, 190,897.22 and 80,973.11 is: 111,745.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,328.13 : 190,897.22 = 80,973.11 : x
  2. Step 2: Convert to fraction form
    138,328.13/190,897.22 = 80,973.11/x
  3. Step 3: Cross multiply
    138,328.13x = 190,897.22 × 80,973.11
  4. Step 4: Simplify right side
    138,328.13x = 15,457,541,593.75
  5. Step 5: Solve for x
    x = 15,457,541,593.75/138,328.13
  6. Step 6: Final answer
    x = 111,745.47

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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.