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Finding the Fourth Proportional to 100,251.07, 138,349.43 and 54,933.06

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Solution

The fourth proportional to 100,251.07, 138,349.43 and 54,933.06 is: 75,809.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,251.07 : 138,349.43 = 54,933.06 : x
  2. Step 2: Convert to fraction form
    100,251.07/138,349.43 = 54,933.06/x
  3. Step 3: Cross multiply
    100,251.07x = 138,349.43 × 54,933.06
  4. Step 4: Simplify right side
    100,251.07x = 7,599,957,539.16
  5. Step 5: Solve for x
    x = 7,599,957,539.16/100,251.07
  6. Step 6: Final answer
    x = 75,809.24

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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.