Home / 100,679,285.92-138,858,695.22-65,408,458

Finding the Fourth Proportional to 100,679,285.92, 138,858,695.22 and 65,408,458

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Solution

The fourth proportional to 100,679,285.92, 138,858,695.22 and 65,408,458 is: 90,212,530.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,679,285.92 : 138,858,695.22 = 65,408,458 : x
  2. Step 2: Convert to fraction form
    100,679,285.92/138,858,695.22 = 65,408,458/x
  3. Step 3: Cross multiply
    100,679,285.92x = 138,858,695.22 × 65,408,458
  4. Step 4: Simplify right side
    100,679,285.92x = 9,082,533,134,232,170
  5. Step 5: Solve for x
    x = 9,082,533,134,232,170/100,679,285.92
  6. Step 6: Final answer
    x = 90,212,530.33

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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.