Home / 147,039.40-220,121.70-87,844.60

Finding the Fourth Proportional to 147,039.40, 220,121.70 and 87,844.60

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Solution

The fourth proportional to 147,039.40, 220,121.70 and 87,844.60 is: 131,505.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,039.40 : 220,121.70 = 87,844.60 : x
  2. Step 2: Convert to fraction form
    147,039.40/220,121.70 = 87,844.60/x
  3. Step 3: Cross multiply
    147,039.40x = 220,121.70 × 87,844.60
  4. Step 4: Simplify right side
    147,039.40x = 19,336,502,687.82
  5. Step 5: Solve for x
    x = 19,336,502,687.82/147,039.40
  6. Step 6: Final answer
    x = 131,505.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.