Home / 128,616,010.20-193,147,964.10-68,149,834.20

Finding the Fourth Proportional to 128,616,010.20, 193,147,964.10 and 68,149,834.20

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Solution

The fourth proportional to 128,616,010.20, 193,147,964.10 and 68,149,834.20 is: 102,343,415.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,616,010.20 : 193,147,964.10 = 68,149,834.20 : x
  2. Step 2: Convert to fraction form
    128,616,010.20/193,147,964.10 = 68,149,834.20/x
  3. Step 3: Cross multiply
    128,616,010.20x = 193,147,964.10 × 68,149,834.20
  4. Step 4: Simplify right side
    128,616,010.20x = 13,163,001,729,482,552
  5. Step 5: Solve for x
    x = 13,163,001,729,482,552/128,616,010.20
  6. Step 6: Final answer
    x = 102,343,415.17

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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.