Home / 129,307,721.52-178,448,819.40-73,551,712.80

Finding the Fourth Proportional to 129,307,721.52, 178,448,819.40 and 73,551,712.80

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Solution

The fourth proportional to 129,307,721.52, 178,448,819.40 and 73,551,712.80 is: 101,503,732.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,307,721.52 : 178,448,819.40 = 73,551,712.80 : x
  2. Step 2: Convert to fraction form
    129,307,721.52/178,448,819.40 = 73,551,712.80/x
  3. Step 3: Cross multiply
    129,307,721.52x = 178,448,819.40 × 73,551,712.80
  4. Step 4: Simplify right side
    129,307,721.52x = 13,125,216,314,007,868
  5. Step 5: Solve for x
    x = 13,125,216,314,007,868/129,307,721.52
  6. Step 6: Final answer
    x = 101,503,732.03

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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.