Home / 113,739.12-156,910.08-68,390.88

Finding the Fourth Proportional to 113,739.12, 156,910.08 and 68,390.88

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Solution

The fourth proportional to 113,739.12, 156,910.08 and 68,390.88 is: 94,349.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,739.12 : 156,910.08 = 68,390.88 : x
  2. Step 2: Convert to fraction form
    113,739.12/156,910.08 = 68,390.88/x
  3. Step 3: Cross multiply
    113,739.12x = 156,910.08 × 68,390.88
  4. Step 4: Simplify right side
    113,739.12x = 10,731,218,452.07
  5. Step 5: Solve for x
    x = 10,731,218,452.07/113,739.12
  6. Step 6: Final answer
    x = 94,349.41

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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.