Home / 138,363.36-190,966.32-108,503.52

Finding the Fourth Proportional to 138,363.36, 190,966.32 and 108,503.52

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Solution

The fourth proportional to 138,363.36, 190,966.32 and 108,503.52 is: 149,754.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,363.36 : 190,966.32 = 108,503.52 : x
  2. Step 2: Convert to fraction form
    138,363.36/190,966.32 = 108,503.52/x
  3. Step 3: Cross multiply
    138,363.36x = 190,966.32 × 108,503.52
  4. Step 4: Simplify right side
    138,363.36x = 20,720,517,921.45
  5. Step 5: Solve for x
    x = 20,720,517,921.45/138,363.36
  6. Step 6: Final answer
    x = 149,754.37

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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.