Home / 131,015.14-180,800-74,426.52

Finding the Fourth Proportional to 131,015.14, 180,800 and 74,426.52

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Solution

The fourth proportional to 131,015.14, 180,800 and 74,426.52 is: 102,708.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,015.14 : 180,800 = 74,426.52 : x
  2. Step 2: Convert to fraction form
    131,015.14/180,800 = 74,426.52/x
  3. Step 3: Cross multiply
    131,015.14x = 180,800 × 74,426.52
  4. Step 4: Simplify right side
    131,015.14x = 13,456,314,816
  5. Step 5: Solve for x
    x = 13,456,314,816/131,015.14
  6. Step 6: Final answer
    x = 102,708.09

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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.