Home / 129,733.76-179,024.84-75,281.72

Finding the Fourth Proportional to 129,733.76, 179,024.84 and 75,281.72

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Solution

The fourth proportional to 129,733.76, 179,024.84 and 75,281.72 is: 103,884.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,733.76 : 179,024.84 = 75,281.72 : x
  2. Step 2: Convert to fraction form
    129,733.76/179,024.84 = 75,281.72/x
  3. Step 3: Cross multiply
    129,733.76x = 179,024.84 × 75,281.72
  4. Step 4: Simplify right side
    129,733.76x = 13,477,297,877.92
  5. Step 5: Solve for x
    x = 13,477,297,877.92/129,733.76
  6. Step 6: Final answer
    x = 103,884.28

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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.