Home / 129,883.32-179,172.95-78,882.48

Finding the Fourth Proportional to 129,883.32, 179,172.95 and 78,882.48

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Solution

The fourth proportional to 129,883.32, 179,172.95 and 78,882.48 is: 108,817.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,883.32 : 179,172.95 = 78,882.48 : x
  2. Step 2: Convert to fraction form
    129,883.32/179,172.95 = 78,882.48/x
  3. Step 3: Cross multiply
    129,883.32x = 179,172.95 × 78,882.48
  4. Step 4: Simplify right side
    129,883.32x = 14,133,606,250.50
  5. Step 5: Solve for x
    x = 14,133,606,250.50/129,883.32
  6. Step 6: Final answer
    x = 108,817.72

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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.