Home / 138,738.88-191,460.16-75,076.68

Finding the Fourth Proportional to 138,738.88, 191,460.16 and 75,076.68

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Solution

The fourth proportional to 138,738.88, 191,460.16 and 75,076.68 is: 103,606.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,738.88 : 191,460.16 = 75,076.68 : x
  2. Step 2: Convert to fraction form
    138,738.88/191,460.16 = 75,076.68/x
  3. Step 3: Cross multiply
    138,738.88x = 191,460.16 × 75,076.68
  4. Step 4: Simplify right side
    138,738.88x = 14,374,193,165.07
  5. Step 5: Solve for x
    x = 14,374,193,165.07/138,738.88
  6. Step 6: Final answer
    x = 103,606.09

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1.5x scale

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.