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Finding the Fourth Proportional to 111,542.40, 153,921.60 and 102,625.92

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Solution

The fourth proportional to 111,542.40, 153,921.60 and 102,625.92 is: 141,617.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,542.40 : 153,921.60 = 102,625.92 : x
  2. Step 2: Convert to fraction form
    111,542.40/153,921.60 = 102,625.92/x
  3. Step 3: Cross multiply
    111,542.40x = 153,921.60 × 102,625.92
  4. Step 4: Simplify right side
    111,542.40x = 15,796,345,807.87
  5. Step 5: Solve for x
    x = 15,796,345,807.87/111,542.40
  6. Step 6: Final answer
    x = 141,617.41

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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.