Home / 131,366.81-181,286.40-74,778.19

Finding the Fourth Proportional to 131,366.81, 181,286.40 and 74,778.19

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Solution

The fourth proportional to 131,366.81, 181,286.40 and 74,778.19 is: 103,194.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,366.81 : 181,286.40 = 74,778.19 : x
  2. Step 2: Convert to fraction form
    131,366.81/181,286.40 = 74,778.19/x
  3. Step 3: Cross multiply
    131,366.81x = 181,286.40 × 74,778.19
  4. Step 4: Simplify right side
    131,366.81x = 13,556,268,690.82
  5. Step 5: Solve for x
    x = 13,556,268,690.82/131,366.81
  6. Step 6: Final answer
    x = 103,194.01

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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.