Home / 165,176.32-247,764.48-71,680

Finding the Fourth Proportional to 165,176.32, 247,764.48 and 71,680

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Solution

The fourth proportional to 165,176.32, 247,764.48 and 71,680 is: 107,520

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,176.32 : 247,764.48 = 71,680 : x
  2. Step 2: Convert to fraction form
    165,176.32/247,764.48 = 71,680/x
  3. Step 3: Cross multiply
    165,176.32x = 247,764.48 × 71,680
  4. Step 4: Simplify right side
    165,176.32x = 17,759,757,926.40
  5. Step 5: Solve for x
    x = 17,759,757,926.40/165,176.32
  6. Step 6: Final answer
    x = 107,520

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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.