Home / 137,099,014.42-189,146,991.87-90,081,395.79

Finding the Fourth Proportional to 137,099,014.42, 189,146,991.87 and 90,081,395.79

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Solution

The fourth proportional to 137,099,014.42, 189,146,991.87 and 90,081,395.79 is: 124,279,704.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,099,014.42 : 189,146,991.87 = 90,081,395.79 : x
  2. Step 2: Convert to fraction form
    137,099,014.42/189,146,991.87 = 90,081,395.79/x
  3. Step 3: Cross multiply
    137,099,014.42x = 189,146,991.87 × 90,081,395.79
  4. Step 4: Simplify right side
    137,099,014.42x = 17,038,625,037,129,384
  5. Step 5: Solve for x
    x = 17,038,625,037,129,384/137,099,014.42
  6. Step 6: Final answer
    x = 124,279,704.78

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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.