Home / 100,278.80-138,361.74-59,986.16

Finding the Fourth Proportional to 100,278.80, 138,361.74 and 59,986.16

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Solution

The fourth proportional to 100,278.80, 138,361.74 and 59,986.16 is: 82,767.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,278.80 : 138,361.74 = 59,986.16 : x
  2. Step 2: Convert to fraction form
    100,278.80/138,361.74 = 59,986.16/x
  3. Step 3: Cross multiply
    100,278.80x = 138,361.74 × 59,986.16
  4. Step 4: Simplify right side
    100,278.80x = 8,299,789,473.52
  5. Step 5: Solve for x
    x = 8,299,789,473.52/100,278.80
  6. Step 6: Final answer
    x = 82,767.14

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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.