Home / 199,420.64-275,181.36-109,990.88

Finding the Fourth Proportional to 199,420.64, 275,181.36 and 109,990.88

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Solution

The fourth proportional to 199,420.64, 275,181.36 and 109,990.88 is: 151,776.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,420.64 : 275,181.36 = 109,990.88 : x
  2. Step 2: Convert to fraction form
    199,420.64/275,181.36 = 109,990.88/x
  3. Step 3: Cross multiply
    199,420.64x = 275,181.36 × 109,990.88
  4. Step 4: Simplify right side
    199,420.64x = 30,267,439,946.00
  5. Step 5: Solve for x
    x = 30,267,439,946.00/199,420.64
  6. Step 6: Final answer
    x = 151,776.87

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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.