Home / 86,266,163.20-129,399,244.80-78,303,539.20

Finding the Fourth Proportional to 86,266,163.20, 129,399,244.80 and 78,303,539.20

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Solution

The fourth proportional to 86,266,163.20, 129,399,244.80 and 78,303,539.20 is: 117,455,308.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,266,163.20 : 129,399,244.80 = 78,303,539.20 : x
  2. Step 2: Convert to fraction form
    86,266,163.20/129,399,244.80 = 78,303,539.20/x
  3. Step 3: Cross multiply
    86,266,163.20x = 129,399,244.80 × 78,303,539.20
  4. Step 4: Simplify right side
    86,266,163.20x = 10,132,418,837,647,196
  5. Step 5: Solve for x
    x = 10,132,418,837,647,196/86,266,163.20
  6. Step 6: Final answer
    x = 117,455,308.80

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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.