Home / 121,875,791.45-168,188,564.57-69,665,951.12

Finding the Fourth Proportional to 121,875,791.45, 168,188,564.57 and 69,665,951.12

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Solution

The fourth proportional to 121,875,791.45, 168,188,564.57 and 69,665,951.12 is: 96,138,996.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,875,791.45 : 168,188,564.57 = 69,665,951.12 : x
  2. Step 2: Convert to fraction form
    121,875,791.45/168,188,564.57 = 69,665,951.12/x
  3. Step 3: Cross multiply
    121,875,791.45x = 168,188,564.57 × 69,665,951.12
  4. Step 4: Simplify right side
    121,875,791.45x = 11,717,016,317,087,310
  5. Step 5: Solve for x
    x = 11,717,016,317,087,310/121,875,791.45
  6. Step 6: Final answer
    x = 96,138,996.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.