Home / 126,981.51-175,199.00-100,040.39

Finding the Fourth Proportional to 126,981.51, 175,199.00 and 100,040.39

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Solution

The fourth proportional to 126,981.51, 175,199.00 and 100,040.39 is: 138,027.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,981.51 : 175,199.00 = 100,040.39 : x
  2. Step 2: Convert to fraction form
    126,981.51/175,199.00 = 100,040.39/x
  3. Step 3: Cross multiply
    126,981.51x = 175,199.00 × 100,040.39
  4. Step 4: Simplify right side
    126,981.51x = 17,526,974,911.41
  5. Step 5: Solve for x
    x = 17,526,974,911.41/126,981.51
  6. Step 6: Final answer
    x = 138,027.77

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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.