Home / 131,397.82-181,329.16-74,809.19

Finding the Fourth Proportional to 131,397.82, 181,329.16 and 74,809.19

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Solution

The fourth proportional to 131,397.82, 181,329.16 and 74,809.19 is: 103,236.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,397.82 : 181,329.16 = 74,809.19 : x
  2. Step 2: Convert to fraction form
    131,397.82/181,329.16 = 74,809.19/x
  3. Step 3: Cross multiply
    131,397.82x = 181,329.16 × 74,809.19
  4. Step 4: Simplify right side
    131,397.82x = 13,565,087,582.98
  5. Step 5: Solve for x
    x = 13,565,087,582.98/131,397.82
  6. Step 6: Final answer
    x = 103,236.78

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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.