Home / 137,943.12-190,355.38-80,587.77

Finding the Fourth Proportional to 137,943.12, 190,355.38 and 80,587.77

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Solution

The fourth proportional to 137,943.12, 190,355.38 and 80,587.77 is: 111,207.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,943.12 : 190,355.38 = 80,587.77 : x
  2. Step 2: Convert to fraction form
    137,943.12/190,355.38 = 80,587.77/x
  3. Step 3: Cross multiply
    137,943.12x = 190,355.38 × 80,587.77
  4. Step 4: Simplify right side
    137,943.12x = 15,340,315,581.70
  5. Step 5: Solve for x
    x = 15,340,315,581.70/137,943.12
  6. Step 6: Final answer
    x = 111,207.54

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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.