Home / 84,378,076.58-127,199,545.97-78,753,417.41

Finding the Fourth Proportional to 84,378,076.58, 127,199,545.97 and 78,753,417.41

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Solution

The fourth proportional to 84,378,076.58, 127,199,545.97 and 78,753,417.41 is: 118,720,399.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,378,076.58 : 127,199,545.97 = 78,753,417.41 : x
  2. Step 2: Convert to fraction form
    84,378,076.58/127,199,545.97 = 78,753,417.41/x
  3. Step 3: Cross multiply
    84,378,076.58x = 127,199,545.97 × 78,753,417.41
  4. Step 4: Simplify right side
    84,378,076.58x = 10,017,398,938,062,124
  5. Step 5: Solve for x
    x = 10,017,398,938,062,124/84,378,076.58
  6. Step 6: Final answer
    x = 118,720,399.23

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.