Home / 135,015.12-186,319.98-74,589.66

Finding the Fourth Proportional to 135,015.12, 186,319.98 and 74,589.66

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Solution

The fourth proportional to 135,015.12, 186,319.98 and 74,589.66 is: 102,933.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,015.12 : 186,319.98 = 74,589.66 : x
  2. Step 2: Convert to fraction form
    135,015.12/186,319.98 = 74,589.66/x
  3. Step 3: Cross multiply
    135,015.12x = 186,319.98 × 74,589.66
  4. Step 4: Simplify right side
    135,015.12x = 13,897,543,959.41
  5. Step 5: Solve for x
    x = 13,897,543,959.41/135,015.12
  6. Step 6: Final answer
    x = 102,933.24

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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.