Home / 138,804,939.20-208,058,109.60-52,510,001.60

Finding the Fourth Proportional to 138,804,939.20, 208,058,109.60 and 52,510,001.60

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Solution

The fourth proportional to 138,804,939.20, 208,058,109.60 and 52,510,001.60 is: 78,708,522.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,804,939.20 : 208,058,109.60 = 52,510,001.60 : x
  2. Step 2: Convert to fraction form
    138,804,939.20/208,058,109.60 = 52,510,001.60/x
  3. Step 3: Cross multiply
    138,804,939.20x = 208,058,109.60 × 52,510,001.60
  4. Step 4: Simplify right side
    138,804,939.20x = 10,925,131,667,988,976
  5. Step 5: Solve for x
    x = 10,925,131,667,988,976/138,804,939.20
  6. Step 6: Final answer
    x = 78,708,522.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.