Home / 130,864.80-196,297.20-42,121.20

Finding the Fourth Proportional to 130,864.80, 196,297.20 and 42,121.20

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Solution

The fourth proportional to 130,864.80, 196,297.20 and 42,121.20 is: 63,181.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,864.80 : 196,297.20 = 42,121.20 : x
  2. Step 2: Convert to fraction form
    130,864.80/196,297.20 = 42,121.20/x
  3. Step 3: Cross multiply
    130,864.80x = 196,297.20 × 42,121.20
  4. Step 4: Simplify right side
    130,864.80x = 8,268,273,620.64
  5. Step 5: Solve for x
    x = 8,268,273,620.64/130,864.80
  6. Step 6: Final answer
    x = 63,181.80

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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.