Home / 138,815,856-208,348,672.80-74,174,916

Finding the Fourth Proportional to 138,815,856, 208,348,672.80 and 74,174,916

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Solution

The fourth proportional to 138,815,856, 208,348,672.80 and 74,174,916 is: 111,329,107.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,815,856 : 208,348,672.80 = 74,174,916 : x
  2. Step 2: Convert to fraction form
    138,815,856/208,348,672.80 = 74,174,916/x
  3. Step 3: Cross multiply
    138,815,856x = 208,348,672.80 × 74,174,916
  4. Step 4: Simplify right side
    138,815,856x = 15,454,245,303,651,486
  5. Step 5: Solve for x
    x = 15,454,245,303,651,486/138,815,856
  6. Step 6: Final answer
    x = 111,329,107.13

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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.