Home / 129,734.56-179,034-70,118.56

Finding the Fourth Proportional to 129,734.56, 179,034 and 70,118.56

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Solution

The fourth proportional to 129,734.56, 179,034 and 70,118.56 is: 96,763.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,734.56 : 179,034 = 70,118.56 : x
  2. Step 2: Convert to fraction form
    129,734.56/179,034 = 70,118.56/x
  3. Step 3: Cross multiply
    129,734.56x = 179,034 × 70,118.56
  4. Step 4: Simplify right side
    129,734.56x = 12,553,606,271.04
  5. Step 5: Solve for x
    x = 12,553,606,271.04/129,734.56
  6. Step 6: Final answer
    x = 96,763.78

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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.