Home / 139,968,134.70-209,952,202.05-86,145,773.10

Finding the Fourth Proportional to 139,968,134.70, 209,952,202.05 and 86,145,773.10

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Solution

The fourth proportional to 139,968,134.70, 209,952,202.05 and 86,145,773.10 is: 129,218,659.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,134.70 : 209,952,202.05 = 86,145,773.10 : x
  2. Step 2: Convert to fraction form
    139,968,134.70/209,952,202.05 = 86,145,773.10/x
  3. Step 3: Cross multiply
    139,968,134.70x = 209,952,202.05 × 86,145,773.10
  4. Step 4: Simplify right side
    139,968,134.70x = 18,086,494,759,644,656
  5. Step 5: Solve for x
    x = 18,086,494,759,644,656/139,968,134.70
  6. Step 6: Final answer
    x = 129,218,659.65

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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.