Home / 113,218.06-156,076.25-79,120.68

Finding the Fourth Proportional to 113,218.06, 156,076.25 and 79,120.68

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Solution

The fourth proportional to 113,218.06, 156,076.25 and 79,120.68 is: 109,071.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,218.06 : 156,076.25 = 79,120.68 : x
  2. Step 2: Convert to fraction form
    113,218.06/156,076.25 = 79,120.68/x
  3. Step 3: Cross multiply
    113,218.06x = 156,076.25 × 79,120.68
  4. Step 4: Simplify right side
    113,218.06x = 12,348,859,031.85
  5. Step 5: Solve for x
    x = 12,348,859,031.85/113,218.06
  6. Step 6: Final answer
    x = 109,071.46

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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.