Home / 111,712.32-154,319.66-101,622.96

Finding the Fourth Proportional to 111,712.32, 154,319.66 and 101,622.96

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Solution

The fourth proportional to 111,712.32, 154,319.66 and 101,622.96 is: 140,382.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,712.32 : 154,319.66 = 101,622.96 : x
  2. Step 2: Convert to fraction form
    111,712.32/154,319.66 = 101,622.96/x
  3. Step 3: Cross multiply
    111,712.32x = 154,319.66 × 101,622.96
  4. Step 4: Simplify right side
    111,712.32x = 15,682,420,127.28
  5. Step 5: Solve for x
    x = 15,682,420,127.28/111,712.32
  6. Step 6: Final answer
    x = 140,382.19

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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.