Home / 138,060.20-190,519.27-77,629.29

Finding the Fourth Proportional to 138,060.20, 190,519.27 and 77,629.29

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Solution

The fourth proportional to 138,060.20, 190,519.27 and 77,629.29 is: 107,126.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,060.20 : 190,519.27 = 77,629.29 : x
  2. Step 2: Convert to fraction form
    138,060.20/190,519.27 = 77,629.29/x
  3. Step 3: Cross multiply
    138,060.20x = 190,519.27 × 77,629.29
  4. Step 4: Simplify right side
    138,060.20x = 14,789,876,261.23
  5. Step 5: Solve for x
    x = 14,789,876,261.23/138,060.20
  6. Step 6: Final answer
    x = 107,126.28

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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.