Home / 113,144.60-156,122.21-65,388.74

Finding the Fourth Proportional to 113,144.60, 156,122.21 and 65,388.74

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Solution

The fourth proportional to 113,144.60, 156,122.21 and 65,388.74 is: 90,226.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,144.60 : 156,122.21 = 65,388.74 : x
  2. Step 2: Convert to fraction form
    113,144.60/156,122.21 = 65,388.74/x
  3. Step 3: Cross multiply
    113,144.60x = 156,122.21 × 65,388.74
  4. Step 4: Simplify right side
    113,144.60x = 10,208,633,980.78
  5. Step 5: Solve for x
    x = 10,208,633,980.78/113,144.60
  6. Step 6: Final answer
    x = 90,226.43

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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.