Home / 100,261.88-138,361.39-59,977.34

Finding the Fourth Proportional to 100,261.88, 138,361.39 and 59,977.34

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Solution

The fourth proportional to 100,261.88, 138,361.39 and 59,977.34 is: 82,768.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,261.88 : 138,361.39 = 59,977.34 : x
  2. Step 2: Convert to fraction form
    100,261.88/138,361.39 = 59,977.34/x
  3. Step 3: Cross multiply
    100,261.88x = 138,361.39 × 59,977.34
  4. Step 4: Simplify right side
    100,261.88x = 8,298,547,289.15
  5. Step 5: Solve for x
    x = 8,298,547,289.15/100,261.88
  6. Step 6: Final answer
    x = 82,768.72

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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.