Home / 139,968,116.70-209,952,175.05-86,145,755.10

Finding the Fourth Proportional to 139,968,116.70, 209,952,175.05 and 86,145,755.10

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Solution

The fourth proportional to 139,968,116.70, 209,952,175.05 and 86,145,755.10 is: 129,218,632.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,116.70 : 209,952,175.05 = 86,145,755.10 : x
  2. Step 2: Convert to fraction form
    139,968,116.70/209,952,175.05 = 86,145,755.10/x
  3. Step 3: Cross multiply
    139,968,116.70x = 209,952,175.05 × 86,145,755.10
  4. Step 4: Simplify right side
    139,968,116.70x = 18,086,488,654,569,632
  5. Step 5: Solve for x
    x = 18,086,488,654,569,632/139,968,116.70
  6. Step 6: Final answer
    x = 129,218,632.65

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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.