Home / 138,630.58-191,362.05-107,943.01

Finding the Fourth Proportional to 138,630.58, 191,362.05 and 107,943.01

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Solution

The fourth proportional to 138,630.58, 191,362.05 and 107,943.01 is: 149,001.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,630.58 : 191,362.05 = 107,943.01 : x
  2. Step 2: Convert to fraction form
    138,630.58/191,362.05 = 107,943.01/x
  3. Step 3: Cross multiply
    138,630.58x = 191,362.05 × 107,943.01
  4. Step 4: Simplify right side
    138,630.58x = 20,656,195,676.77
  5. Step 5: Solve for x
    x = 20,656,195,676.77/138,630.58
  6. Step 6: Final answer
    x = 149,001.73

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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.