Home / 414,060.12-621,090.32-129,772.72

Finding the Fourth Proportional to 414,060.12, 621,090.32 and 129,772.72

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Solution

The fourth proportional to 414,060.12, 621,090.32 and 129,772.72 is: 194,659.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,060.12 : 621,090.32 = 129,772.72 : x
  2. Step 2: Convert to fraction form
    414,060.12/621,090.32 = 129,772.72/x
  3. Step 3: Cross multiply
    414,060.12x = 621,090.32 × 129,772.72
  4. Step 4: Simplify right side
    414,060.12x = 80,600,582,990.45
  5. Step 5: Solve for x
    x = 80,600,582,990.45/414,060.12
  6. Step 6: Final answer
    x = 194,659.13

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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.