Home / 138,903,225.62-191,689,971.01-76,181,820.82

Finding the Fourth Proportional to 138,903,225.62, 191,689,971.01 and 76,181,820.82

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Solution

The fourth proportional to 138,903,225.62, 191,689,971.01 and 76,181,820.82 is: 105,132,843.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,903,225.62 : 191,689,971.01 = 76,181,820.82 : x
  2. Step 2: Convert to fraction form
    138,903,225.62/191,689,971.01 = 76,181,820.82/x
  3. Step 3: Cross multiply
    138,903,225.62x = 191,689,971.01 × 76,181,820.82
  4. Step 4: Simplify right side
    138,903,225.62x = 14,603,291,024,474,812
  5. Step 5: Solve for x
    x = 14,603,291,024,474,812/138,903,225.62
  6. Step 6: Final answer
    x = 105,132,843.09

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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.