Home / 139,587,530.85-192,505,392.18-87,381,325.80

Finding the Fourth Proportional to 139,587,530.85, 192,505,392.18 and 87,381,325.80

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Solution

The fourth proportional to 139,587,530.85, 192,505,392.18 and 87,381,325.80 is: 120,507,729.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,587,530.85 : 192,505,392.18 = 87,381,325.80 : x
  2. Step 2: Convert to fraction form
    139,587,530.85/192,505,392.18 = 87,381,325.80/x
  3. Step 3: Cross multiply
    139,587,530.85x = 192,505,392.18 × 87,381,325.80
  4. Step 4: Simplify right side
    139,587,530.85x = 16,821,376,392,337,352
  5. Step 5: Solve for x
    x = 16,821,376,392,337,352/139,587,530.85
  6. Step 6: Final answer
    x = 120,507,729.38

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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.