Home / 112,728.96-155,565.66-64,982.04

Finding the Fourth Proportional to 112,728.96, 155,565.66 and 64,982.04

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Solution

The fourth proportional to 112,728.96, 155,565.66 and 64,982.04 is: 89,675.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,728.96 : 155,565.66 = 64,982.04 : x
  2. Step 2: Convert to fraction form
    112,728.96/155,565.66 = 64,982.04/x
  3. Step 3: Cross multiply
    112,728.96x = 155,565.66 × 64,982.04
  4. Step 4: Simplify right side
    112,728.96x = 10,108,973,940.75
  5. Step 5: Solve for x
    x = 10,108,973,940.75/112,728.96
  6. Step 6: Final answer
    x = 89,675.04

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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.