Home / 99,639,940.20-149,459,910.30-86,203,012.20

Finding the Fourth Proportional to 99,639,940.20, 149,459,910.30 and 86,203,012.20

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Solution

The fourth proportional to 99,639,940.20, 149,459,910.30 and 86,203,012.20 is: 129,304,518.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,639,940.20 : 149,459,910.30 = 86,203,012.20 : x
  2. Step 2: Convert to fraction form
    99,639,940.20/149,459,910.30 = 86,203,012.20/x
  3. Step 3: Cross multiply
    99,639,940.20x = 149,459,910.30 × 86,203,012.20
  4. Step 4: Simplify right side
    99,639,940.20x = 12,883,894,471,001,808
  5. Step 5: Solve for x
    x = 12,883,894,471,001,808/99,639,940.20
  6. Step 6: Final answer
    x = 129,304,518.30

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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.