Home / 138,819,307.20-208,228,960.80-70,794,859.20

Finding the Fourth Proportional to 138,819,307.20, 208,228,960.80 and 70,794,859.20

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Solution

The fourth proportional to 138,819,307.20, 208,228,960.80 and 70,794,859.20 is: 106,192,288.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,819,307.20 : 208,228,960.80 = 70,794,859.20 : x
  2. Step 2: Convert to fraction form
    138,819,307.20/208,228,960.80 = 70,794,859.20/x
  3. Step 3: Cross multiply
    138,819,307.20x = 208,228,960.80 × 70,794,859.20
  4. Step 4: Simplify right side
    138,819,307.20x = 14,741,539,961,198,320
  5. Step 5: Solve for x
    x = 14,741,539,961,198,320/138,819,307.20
  6. Step 6: Final answer
    x = 106,192,288.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.