Home / 129,726,505.56-179,022,591.84-70,989,183.12

Finding the Fourth Proportional to 129,726,505.56, 179,022,591.84 and 70,989,183.12

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Solution

The fourth proportional to 129,726,505.56, 179,022,591.84 and 70,989,183.12 is: 97,965,080.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,726,505.56 : 179,022,591.84 = 70,989,183.12 : x
  2. Step 2: Convert to fraction form
    129,726,505.56/179,022,591.84 = 70,989,183.12/x
  3. Step 3: Cross multiply
    129,726,505.56x = 179,022,591.84 × 70,989,183.12
  4. Step 4: Simplify right side
    129,726,505.56x = 12,708,667,554,746,778
  5. Step 5: Solve for x
    x = 12,708,667,554,746,778/129,726,505.56
  6. Step 6: Final answer
    x = 97,965,080.46

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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.