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Finding the Fourth Proportional to 98,939.52, 148,141.44 and 72,443.52

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Solution

The fourth proportional to 98,939.52, 148,141.44 and 72,443.52 is: 108,469.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,939.52 : 148,141.44 = 72,443.52 : x
  2. Step 2: Convert to fraction form
    98,939.52/148,141.44 = 72,443.52/x
  3. Step 3: Cross multiply
    98,939.52x = 148,141.44 × 72,443.52
  4. Step 4: Simplify right side
    98,939.52x = 10,731,887,371.47
  5. Step 5: Solve for x
    x = 10,731,887,371.47/98,939.52
  6. Step 6: Final answer
    x = 108,469.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.