Home / 230,708.45-318,376.63-128,727.96

Finding the Fourth Proportional to 230,708.45, 318,376.63 and 128,727.96

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Solution

The fourth proportional to 230,708.45, 318,376.63 and 128,727.96 is: 177,644.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,708.45 : 318,376.63 = 128,727.96 : x
  2. Step 2: Convert to fraction form
    230,708.45/318,376.63 = 128,727.96/x
  3. Step 3: Cross multiply
    230,708.45x = 318,376.63 × 128,727.96
  4. Step 4: Simplify right side
    230,708.45x = 40,983,973,229.91
  5. Step 5: Solve for x
    x = 40,983,973,229.91/230,708.45
  6. Step 6: Final answer
    x = 177,644.00

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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.