Home / 129,907,556.38-179,272,365.75-77,696,591.02

Finding the Fourth Proportional to 129,907,556.38, 179,272,365.75 and 77,696,591.02

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Solution

The fourth proportional to 129,907,556.38, 179,272,365.75 and 77,696,591.02 is: 107,221,258.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,907,556.38 : 179,272,365.75 = 77,696,591.02 : x
  2. Step 2: Convert to fraction form
    129,907,556.38/179,272,365.75 = 77,696,591.02/x
  3. Step 3: Cross multiply
    129,907,556.38x = 179,272,365.75 × 77,696,591.02
  4. Step 4: Simplify right side
    129,907,556.38x = 13,928,851,682,865,604
  5. Step 5: Solve for x
    x = 13,928,851,682,865,604/129,907,556.38
  6. Step 6: Final answer
    x = 107,221,258.49

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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.