Home / 140,171,920.52-193,435,212.66-78,293,139.08

Finding the Fourth Proportional to 140,171,920.52, 193,435,212.66 and 78,293,139.08

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Solution

The fourth proportional to 140,171,920.52, 193,435,212.66 and 78,293,139.08 is: 108,043,393.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,171,920.52 : 193,435,212.66 = 78,293,139.08 : x
  2. Step 2: Convert to fraction form
    140,171,920.52/193,435,212.66 = 78,293,139.08/x
  3. Step 3: Cross multiply
    140,171,920.52x = 193,435,212.66 × 78,293,139.08
  4. Step 4: Simplify right side
    140,171,920.52x = 15,144,650,007,758,756
  5. Step 5: Solve for x
    x = 15,144,650,007,758,756/140,171,920.52
  6. Step 6: Final answer
    x = 108,043,393.80

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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.