Home / 129,923,379.72-179,279,798.58-71,962,112.52

Finding the Fourth Proportional to 129,923,379.72, 179,279,798.58 and 71,962,112.52

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Solution

The fourth proportional to 129,923,379.72, 179,279,798.58 and 71,962,112.52 is: 99,299,703.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,923,379.72 : 179,279,798.58 = 71,962,112.52 : x
  2. Step 2: Convert to fraction form
    129,923,379.72/179,279,798.58 = 71,962,112.52/x
  3. Step 3: Cross multiply
    129,923,379.72x = 179,279,798.58 × 71,962,112.52
  4. Step 4: Simplify right side
    129,923,379.72x = 12,901,353,037,976,896
  5. Step 5: Solve for x
    x = 12,901,353,037,976,896/129,923,379.72
  6. Step 6: Final answer
    x = 99,299,703.15

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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.