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Finding the Fourth Proportional to 111,112.75, 153,280.92 and 75,313.99

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Solution

The fourth proportional to 111,112.75, 153,280.92 and 75,313.99 is: 103,896.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,112.75 : 153,280.92 = 75,313.99 : x
  2. Step 2: Convert to fraction form
    111,112.75/153,280.92 = 75,313.99/x
  3. Step 3: Cross multiply
    111,112.75x = 153,280.92 × 75,313.99
  4. Step 4: Simplify right side
    111,112.75x = 11,544,197,676.07
  5. Step 5: Solve for x
    x = 11,544,197,676.07/111,112.75
  6. Step 6: Final answer
    x = 103,896.25

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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.