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Finding the Fourth Proportional to 146,998.80, 220,206.60 and 87,658.20

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Solution

The fourth proportional to 146,998.80, 220,206.60 and 87,658.20 is: 131,313.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,998.80 : 220,206.60 = 87,658.20 : x
  2. Step 2: Convert to fraction form
    146,998.80/220,206.60 = 87,658.20/x
  3. Step 3: Cross multiply
    146,998.80x = 220,206.60 × 87,658.20
  4. Step 4: Simplify right side
    146,998.80x = 19,302,914,184.12
  5. Step 5: Solve for x
    x = 19,302,914,184.12/146,998.80
  6. Step 6: Final answer
    x = 131,313.41

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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.