Home / 100,278.06-138,383.67-59,993.46

Finding the Fourth Proportional to 100,278.06, 138,383.67 and 59,993.46

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Solution

The fourth proportional to 100,278.06, 138,383.67 and 59,993.46 is: 82,790.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,278.06 : 138,383.67 = 59,993.46 : x
  2. Step 2: Convert to fraction form
    100,278.06/138,383.67 = 59,993.46/x
  3. Step 3: Cross multiply
    100,278.06x = 138,383.67 × 59,993.46
  4. Step 4: Simplify right side
    100,278.06x = 8,302,115,170.80
  5. Step 5: Solve for x
    x = 8,302,115,170.80/100,278.06
  6. Step 6: Final answer
    x = 82,790.94

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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.