Home / 131,291.76-181,180.12-74,701.84

Finding the Fourth Proportional to 131,291.76, 181,180.12 and 74,701.84

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Solution

The fourth proportional to 131,291.76, 181,180.12 and 74,701.84 is: 103,087.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,291.76 : 181,180.12 = 74,701.84 : x
  2. Step 2: Convert to fraction form
    131,291.76/181,180.12 = 74,701.84/x
  3. Step 3: Cross multiply
    131,291.76x = 181,180.12 × 74,701.84
  4. Step 4: Simplify right side
    131,291.76x = 13,534,488,335.42
  5. Step 5: Solve for x
    x = 13,534,488,335.42/131,291.76
  6. Step 6: Final answer
    x = 103,087.11

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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.