Home / 107,760.16-161,640.30-28,872.40

Finding the Fourth Proportional to 107,760.16, 161,640.30 and 28,872.40

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Solution

The fourth proportional to 107,760.16, 161,640.30 and 28,872.40 is: 43,308.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,760.16 : 161,640.30 = 28,872.40 : x
  2. Step 2: Convert to fraction form
    107,760.16/161,640.30 = 28,872.40/x
  3. Step 3: Cross multiply
    107,760.16x = 161,640.30 × 28,872.40
  4. Step 4: Simplify right side
    107,760.16x = 4,666,943,397.72
  5. Step 5: Solve for x
    x = 4,666,943,397.72/107,760.16
  6. Step 6: Final answer
    x = 43,308.62

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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.