Home / 137,789.82-190,143.72-77,359.35

Finding the Fourth Proportional to 137,789.82, 190,143.72 and 77,359.35

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Solution

The fourth proportional to 137,789.82, 190,143.72 and 77,359.35 is: 106,752.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,789.82 : 190,143.72 = 77,359.35 : x
  2. Step 2: Convert to fraction form
    137,789.82/190,143.72 = 77,359.35/x
  3. Step 3: Cross multiply
    137,789.82x = 190,143.72 × 77,359.35
  4. Step 4: Simplify right side
    137,789.82x = 14,709,394,585.78
  5. Step 5: Solve for x
    x = 14,709,394,585.78/137,789.82
  6. Step 6: Final answer
    x = 106,752.40

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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.