Home / 139,353,756.85-192,320,439.57-76,640,904.59

Finding the Fourth Proportional to 139,353,756.85, 192,320,439.57 and 76,640,904.59

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Solution

The fourth proportional to 139,353,756.85, 192,320,439.57 and 76,640,904.59 is: 105,771,188.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,353,756.85 : 192,320,439.57 = 76,640,904.59 : x
  2. Step 2: Convert to fraction form
    139,353,756.85/192,320,439.57 = 76,640,904.59/x
  3. Step 3: Cross multiply
    139,353,756.85x = 192,320,439.57 × 76,640,904.59
  4. Step 4: Simplify right side
    139,353,756.85x = 14,739,612,459,408,026
  5. Step 5: Solve for x
    x = 14,739,612,459,408,026/139,353,756.85
  6. Step 6: Final answer
    x = 105,771,188.33

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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.