Home / 111,776.72-154,173.78-75,904.45

Finding the Fourth Proportional to 111,776.72, 154,173.78 and 75,904.45

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Solution

The fourth proportional to 111,776.72, 154,173.78 and 75,904.45 is: 104,695.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,776.72 : 154,173.78 = 75,904.45 : x
  2. Step 2: Convert to fraction form
    111,776.72/154,173.78 = 75,904.45/x
  3. Step 3: Cross multiply
    111,776.72x = 154,173.78 × 75,904.45
  4. Step 4: Simplify right side
    111,776.72x = 11,702,475,589.89
  5. Step 5: Solve for x
    x = 11,702,475,589.89/111,776.72
  6. Step 6: Final answer
    x = 104,695.11

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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.