Home / 113,170.96-156,121.32-75,396.88

Finding the Fourth Proportional to 113,170.96, 156,121.32 and 75,396.88

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Solution

The fourth proportional to 113,170.96, 156,121.32 and 75,396.88 is: 104,011.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,170.96 : 156,121.32 = 75,396.88 : x
  2. Step 2: Convert to fraction form
    113,170.96/156,121.32 = 75,396.88/x
  3. Step 3: Cross multiply
    113,170.96x = 156,121.32 × 75,396.88
  4. Step 4: Simplify right side
    113,170.96x = 11,771,060,429.48
  5. Step 5: Solve for x
    x = 11,771,060,429.48/113,170.96
  6. Step 6: Final answer
    x = 104,011.32

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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.