Home / 138,671,644.83-191,366,697.21-76,791,908.67

Finding the Fourth Proportional to 138,671,644.83, 191,366,697.21 and 76,791,908.67

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Solution

The fourth proportional to 138,671,644.83, 191,366,697.21 and 76,791,908.67 is: 105,972,738.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,671,644.83 : 191,366,697.21 = 76,791,908.67 : x
  2. Step 2: Convert to fraction form
    138,671,644.83/191,366,697.21 = 76,791,908.67/x
  3. Step 3: Cross multiply
    138,671,644.83x = 191,366,697.21 × 76,791,908.67
  4. Step 4: Simplify right side
    138,671,644.83x = 14,695,413,934,629,864
  5. Step 5: Solve for x
    x = 14,695,413,934,629,864/138,671,644.83
  6. Step 6: Final answer
    x = 105,972,738.35

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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.