Home / 111,613.08-153,920.34-73,305.21

Finding the Fourth Proportional to 111,613.08, 153,920.34 and 73,305.21

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Solution

The fourth proportional to 111,613.08, 153,920.34 and 73,305.21 is: 101,091.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,613.08 : 153,920.34 = 73,305.21 : x
  2. Step 2: Convert to fraction form
    111,613.08/153,920.34 = 73,305.21/x
  3. Step 3: Cross multiply
    111,613.08x = 153,920.34 × 73,305.21
  4. Step 4: Simplify right side
    111,613.08x = 11,283,162,846.97
  5. Step 5: Solve for x
    x = 11,283,162,846.97/111,613.08
  6. Step 6: Final answer
    x = 101,091.76

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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.