Home / 147,631.50-203,742.42-83,989.80

Finding the Fourth Proportional to 147,631.50, 203,742.42 and 83,989.80

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Solution

The fourth proportional to 147,631.50, 203,742.42 and 83,989.80 is: 115,912.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,631.50 : 203,742.42 = 83,989.80 : x
  2. Step 2: Convert to fraction form
    147,631.50/203,742.42 = 83,989.80/x
  3. Step 3: Cross multiply
    147,631.50x = 203,742.42 × 83,989.80
  4. Step 4: Simplify right side
    147,631.50x = 17,112,285,107.32
  5. Step 5: Solve for x
    x = 17,112,285,107.32/147,631.50
  6. Step 6: Final answer
    x = 115,912.15

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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.