Home / 104,081.78-143,639.79-58,743.66

Finding the Fourth Proportional to 104,081.78, 143,639.79 and 58,743.66

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Solution

The fourth proportional to 104,081.78, 143,639.79 and 58,743.66 is: 81,070.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,081.78 : 143,639.79 = 58,743.66 : x
  2. Step 2: Convert to fraction form
    104,081.78/143,639.79 = 58,743.66/x
  3. Step 3: Cross multiply
    104,081.78x = 143,639.79 × 58,743.66
  4. Step 4: Simplify right side
    104,081.78x = 8,437,926,986.23
  5. Step 5: Solve for x
    x = 8,437,926,986.23/104,081.78
  6. Step 6: Final answer
    x = 81,070.16

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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.