Home / 129,788.63-179,108.31-70,172.63

Finding the Fourth Proportional to 129,788.63, 179,108.31 and 70,172.63

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Solution

The fourth proportional to 129,788.63, 179,108.31 and 70,172.63 is: 96,838.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,788.63 : 179,108.31 = 70,172.63 : x
  2. Step 2: Convert to fraction form
    129,788.63/179,108.31 = 70,172.63/x
  3. Step 3: Cross multiply
    129,788.63x = 179,108.31 × 70,172.63
  4. Step 4: Simplify right side
    129,788.63x = 12,568,500,272.01
  5. Step 5: Solve for x
    x = 12,568,500,272.01/129,788.63
  6. Step 6: Final answer
    x = 96,838.23

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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.