Home / 129,882,993.28-179,239,848-78,364,816

Finding the Fourth Proportional to 129,882,993.28, 179,239,848 and 78,364,816

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Solution

The fourth proportional to 129,882,993.28, 179,239,848 and 78,364,816 is: 108,144,240.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,882,993.28 : 179,239,848 = 78,364,816 : x
  2. Step 2: Convert to fraction form
    129,882,993.28/179,239,848 = 78,364,816/x
  3. Step 3: Cross multiply
    129,882,993.28x = 179,239,848 × 78,364,816
  4. Step 4: Simplify right side
    129,882,993.28x = 14,046,097,708,387,968
  5. Step 5: Solve for x
    x = 14,046,097,708,387,968/129,882,993.28
  6. Step 6: Final answer
    x = 108,144,240.86

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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.