Home / 120,787,981.20-166,689,331.64-68,575,951.44

Finding the Fourth Proportional to 120,787,981.20, 166,689,331.64 and 68,575,951.44

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Solution

The fourth proportional to 120,787,981.20, 166,689,331.64 and 68,575,951.44 is: 94,635,901.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,787,981.20 : 166,689,331.64 = 68,575,951.44 : x
  2. Step 2: Convert to fraction form
    120,787,981.20/166,689,331.64 = 68,575,951.44/x
  3. Step 3: Cross multiply
    120,787,981.20x = 166,689,331.64 × 68,575,951.44
  4. Step 4: Simplify right side
    120,787,981.20x = 11,430,879,512,110,694
  5. Step 5: Solve for x
    x = 11,430,879,512,110,694/120,787,981.20
  6. Step 6: Final answer
    x = 94,635,901.67

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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.