Home / 120,944,875.72-166,918,098.20-68,741,758.68

Finding the Fourth Proportional to 120,944,875.72, 166,918,098.20 and 68,741,758.68

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Solution

The fourth proportional to 120,944,875.72, 166,918,098.20 and 68,741,758.68 is: 94,871,680.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,944,875.72 : 166,918,098.20 = 68,741,758.68 : x
  2. Step 2: Convert to fraction form
    120,944,875.72/166,918,098.20 = 68,741,758.68/x
  3. Step 3: Cross multiply
    120,944,875.72x = 166,918,098.20 × 68,741,758.68
  4. Step 4: Simplify right side
    120,944,875.72x = 11,474,243,625,788,942
  5. Step 5: Solve for x
    x = 11,474,243,625,788,942/120,944,875.72
  6. Step 6: Final answer
    x = 94,871,680.65

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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.