Home / 137,949.66-190,370.34-80,628.39

Finding the Fourth Proportional to 137,949.66, 190,370.34 and 80,628.39

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Solution

The fourth proportional to 137,949.66, 190,370.34 and 80,628.39 is: 111,267.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,949.66 : 190,370.34 = 80,628.39 : x
  2. Step 2: Convert to fraction form
    137,949.66/190,370.34 = 80,628.39/x
  3. Step 3: Cross multiply
    137,949.66x = 190,370.34 × 80,628.39
  4. Step 4: Simplify right side
    137,949.66x = 15,349,254,017.95
  5. Step 5: Solve for x
    x = 15,349,254,017.95/137,949.66
  6. Step 6: Final answer
    x = 111,267.07

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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.