Home / 121,863,542.76-168,171,689-69,653,699.44

Finding the Fourth Proportional to 121,863,542.76, 168,171,689 and 69,653,699.44

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Solution

The fourth proportional to 121,863,542.76, 168,171,689 and 69,653,699.44 is: 96,122,105.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,863,542.76 : 168,171,689 = 69,653,699.44 : x
  2. Step 2: Convert to fraction form
    121,863,542.76/168,171,689 = 69,653,699.44/x
  3. Step 3: Cross multiply
    121,863,542.76x = 168,171,689 × 69,653,699.44
  4. Step 4: Simplify right side
    121,863,542.76x = 11,713,780,279,923,154
  5. Step 5: Solve for x
    x = 11,713,780,279,923,154/121,863,542.76
  6. Step 6: Final answer
    x = 96,122,105.22

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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.