Home / 100,185.77-138,269.16-57,744.61

Finding the Fourth Proportional to 100,185.77, 138,269.16 and 57,744.61

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Solution

The fourth proportional to 100,185.77, 138,269.16 and 57,744.61 is: 79,694.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,185.77 : 138,269.16 = 57,744.61 : x
  2. Step 2: Convert to fraction form
    100,185.77/138,269.16 = 57,744.61/x
  3. Step 3: Cross multiply
    100,185.77x = 138,269.16 × 57,744.61
  4. Step 4: Simplify right side
    100,185.77x = 7,984,298,373.55
  5. Step 5: Solve for x
    x = 7,984,298,373.55/100,185.77
  6. Step 6: Final answer
    x = 79,694.93

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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.