Home / 99,738,019.20-149,607,028.80-86,301,091.20

Finding the Fourth Proportional to 99,738,019.20, 149,607,028.80 and 86,301,091.20

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Solution

The fourth proportional to 99,738,019.20, 149,607,028.80 and 86,301,091.20 is: 129,451,636.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,738,019.20 : 149,607,028.80 = 86,301,091.20 : x
  2. Step 2: Convert to fraction form
    99,738,019.20/149,607,028.80 = 86,301,091.20/x
  3. Step 3: Cross multiply
    99,738,019.20x = 149,607,028.80 × 86,301,091.20
  4. Step 4: Simplify right side
    99,738,019.20x = 12,911,249,836,629,828
  5. Step 5: Solve for x
    x = 12,911,249,836,629,828/99,738,019.20
  6. Step 6: Final answer
    x = 129,451,636.80

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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.