Home / 137,605,919.77-189,853,418.64-78,057,401.68

Finding the Fourth Proportional to 137,605,919.77, 189,853,418.64 and 78,057,401.68

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Solution

The fourth proportional to 137,605,919.77, 189,853,418.64 and 78,057,401.68 is: 107,694,963.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,605,919.77 : 189,853,418.64 = 78,057,401.68 : x
  2. Step 2: Convert to fraction form
    137,605,919.77/189,853,418.64 = 78,057,401.68/x
  3. Step 3: Cross multiply
    137,605,919.77x = 189,853,418.64 × 78,057,401.68
  4. Step 4: Simplify right side
    137,605,919.77x = 14,819,464,559,103,680
  5. Step 5: Solve for x
    x = 14,819,464,559,103,680/137,605,919.77
  6. Step 6: Final answer
    x = 107,694,963.88

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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.