Home / 132,621.60-198,640.80-70,219.20

Finding the Fourth Proportional to 132,621.60, 198,640.80 and 70,219.20

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Solution

The fourth proportional to 132,621.60, 198,640.80 and 70,219.20 is: 105,174.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,621.60 : 198,640.80 = 70,219.20 : x
  2. Step 2: Convert to fraction form
    132,621.60/198,640.80 = 70,219.20/x
  3. Step 3: Cross multiply
    132,621.60x = 198,640.80 × 70,219.20
  4. Step 4: Simplify right side
    132,621.60x = 13,948,398,063.36
  5. Step 5: Solve for x
    x = 13,948,398,063.36/132,621.60
  6. Step 6: Final answer
    x = 105,174.41

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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.