Home / 131,097.05-180,927.80-80,139.60

Finding the Fourth Proportional to 131,097.05, 180,927.80 and 80,139.60

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Solution

The fourth proportional to 131,097.05, 180,927.80 and 80,139.60 is: 110,601.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,097.05 : 180,927.80 = 80,139.60 : x
  2. Step 2: Convert to fraction form
    131,097.05/180,927.80 = 80,139.60/x
  3. Step 3: Cross multiply
    131,097.05x = 180,927.80 × 80,139.60
  4. Step 4: Simplify right side
    131,097.05x = 14,499,481,120.18
  5. Step 5: Solve for x
    x = 14,499,481,120.18/131,097.05
  6. Step 6: Final answer
    x = 110,601.13

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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.