Home / 73,132.20-109,484.46-66,128.31

Finding the Fourth Proportional to 73,132.20, 109,484.46 and 66,128.31

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Solution

The fourth proportional to 73,132.20, 109,484.46 and 66,128.31 is: 98,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,132.20 : 109,484.46 = 66,128.31 : x
  2. Step 2: Convert to fraction form
    73,132.20/109,484.46 = 66,128.31/x
  3. Step 3: Cross multiply
    73,132.20x = 109,484.46 × 66,128.31
  4. Step 4: Simplify right side
    73,132.20x = 7,240,022,311.06
  5. Step 5: Solve for x
    x = 7,240,022,311.06/73,132.20
  6. Step 6: Final answer
    x = 98,999.10

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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.