Home / 137,789.82-190,143.72-77,359.36

Finding the Fourth Proportional to 137,789.82, 190,143.72 and 77,359.36

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Solution

The fourth proportional to 137,789.82, 190,143.72 and 77,359.36 is: 106,752.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,789.82 : 190,143.72 = 77,359.36 : x
  2. Step 2: Convert to fraction form
    137,789.82/190,143.72 = 77,359.36/x
  3. Step 3: Cross multiply
    137,789.82x = 190,143.72 × 77,359.36
  4. Step 4: Simplify right side
    137,789.82x = 14,709,396,487.22
  5. Step 5: Solve for x
    x = 14,709,396,487.22/137,789.82
  6. Step 6: Final answer
    x = 106,752.42

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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.