Home / 111,789.57-154,191.51-75,917.28

Finding the Fourth Proportional to 111,789.57, 154,191.51 and 75,917.28

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Solution

The fourth proportional to 111,789.57, 154,191.51 and 75,917.28 is: 104,712.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,789.57 : 154,191.51 = 75,917.28 : x
  2. Step 2: Convert to fraction form
    111,789.57/154,191.51 = 75,917.28/x
  3. Step 3: Cross multiply
    111,789.57x = 154,191.51 × 75,917.28
  4. Step 4: Simplify right side
    111,789.57x = 11,705,800,038.29
  5. Step 5: Solve for x
    x = 11,705,800,038.29/111,789.57
  6. Step 6: Final answer
    x = 104,712.81

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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.