Home / 113,613.12-156,767.62-65,857.12

Finding the Fourth Proportional to 113,613.12, 156,767.62 and 65,857.12

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Solution

The fourth proportional to 113,613.12, 156,767.62 and 65,857.12 is: 90,872.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,613.12 : 156,767.62 = 65,857.12 : x
  2. Step 2: Convert to fraction form
    113,613.12/156,767.62 = 65,857.12/x
  3. Step 3: Cross multiply
    113,613.12x = 156,767.62 × 65,857.12
  4. Step 4: Simplify right side
    113,613.12x = 10,324,263,962.45
  5. Step 5: Solve for x
    x = 10,324,263,962.45/113,613.12
  6. Step 6: Final answer
    x = 90,872.11

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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.