Home / 139,142,203.80-192,021,070.14-77,263,575.72

Finding the Fourth Proportional to 139,142,203.80, 192,021,070.14 and 77,263,575.72

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Solution

The fourth proportional to 139,142,203.80, 192,021,070.14 and 77,263,575.72 is: 106,626,415.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,142,203.80 : 192,021,070.14 = 77,263,575.72 : x
  2. Step 2: Convert to fraction form
    139,142,203.80/192,021,070.14 = 77,263,575.72/x
  3. Step 3: Cross multiply
    139,142,203.80x = 192,021,070.14 × 77,263,575.72
  4. Step 4: Simplify right side
    139,142,203.80x = 14,836,234,492,597,320
  5. Step 5: Solve for x
    x = 14,836,234,492,597,320/139,142,203.80
  6. Step 6: Final answer
    x = 106,626,415.91

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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.