Home / 122,735.64-169,291.89-79,638.12

Finding the Fourth Proportional to 122,735.64, 169,291.89 and 79,638.12

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Solution

The fourth proportional to 122,735.64, 169,291.89 and 79,638.12 is: 109,846.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,735.64 : 169,291.89 = 79,638.12 : x
  2. Step 2: Convert to fraction form
    122,735.64/169,291.89 = 79,638.12/x
  3. Step 3: Cross multiply
    122,735.64x = 169,291.89 × 79,638.12
  4. Step 4: Simplify right side
    122,735.64x = 13,482,087,850.85
  5. Step 5: Solve for x
    x = 13,482,087,850.85/122,735.64
  6. Step 6: Final answer
    x = 109,846.56

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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.