Home / 137,876.37-190,262.08-77,449.56

Finding the Fourth Proportional to 137,876.37, 190,262.08 and 77,449.56

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Solution

The fourth proportional to 137,876.37, 190,262.08 and 77,449.56 is: 106,876.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,876.37 : 190,262.08 = 77,449.56 : x
  2. Step 2: Convert to fraction form
    137,876.37/190,262.08 = 77,449.56/x
  3. Step 3: Cross multiply
    137,876.37x = 190,262.08 × 77,449.56
  4. Step 4: Simplify right side
    137,876.37x = 14,735,714,380.68
  5. Step 5: Solve for x
    x = 14,735,714,380.68/137,876.37
  6. Step 6: Final answer
    x = 106,876.29

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1.5x scale

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.