Home / 112,146.15-168,028.80-67,679.49

Finding the Fourth Proportional to 112,146.15, 168,028.80 and 67,679.49

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Solution

The fourth proportional to 112,146.15, 168,028.80 and 67,679.49 is: 101,404.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,146.15 : 168,028.80 = 67,679.49 : x
  2. Step 2: Convert to fraction form
    112,146.15/168,028.80 = 67,679.49/x
  3. Step 3: Cross multiply
    112,146.15x = 168,028.80 × 67,679.49
  4. Step 4: Simplify right side
    112,146.15x = 11,372,103,489.31
  5. Step 5: Solve for x
    x = 11,372,103,489.31/112,146.15
  6. Step 6: Final answer
    x = 101,404.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.