Home / 138,738.41-191,459.48-75,076.19

Finding the Fourth Proportional to 138,738.41, 191,459.48 and 75,076.19

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Solution

The fourth proportional to 138,738.41, 191,459.48 and 75,076.19 is: 103,605.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,738.41 : 191,459.48 = 75,076.19 : x
  2. Step 2: Convert to fraction form
    138,738.41/191,459.48 = 75,076.19/x
  3. Step 3: Cross multiply
    138,738.41x = 191,459.48 × 75,076.19
  4. Step 4: Simplify right side
    138,738.41x = 14,374,046,965.10
  5. Step 5: Solve for x
    x = 14,374,046,965.10/138,738.41
  6. Step 6: Final answer
    x = 103,605.39

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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.