Home / 128,616,008.20-193,147,961.10-68,149,832.20

Finding the Fourth Proportional to 128,616,008.20, 193,147,961.10 and 68,149,832.20

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Solution

The fourth proportional to 128,616,008.20, 193,147,961.10 and 68,149,832.20 is: 102,343,412.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,616,008.20 : 193,147,961.10 = 68,149,832.20 : x
  2. Step 2: Convert to fraction form
    128,616,008.20/193,147,961.10 = 68,149,832.20/x
  3. Step 3: Cross multiply
    128,616,008.20x = 193,147,961.10 × 68,149,832.20
  4. Step 4: Simplify right side
    128,616,008.20x = 13,163,001,138,737,128
  5. Step 5: Solve for x
    x = 13,163,001,138,737,128/128,616,008.20
  6. Step 6: Final answer
    x = 102,343,412.17

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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.