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Finding the Fourth Proportional to 145,449, 200,722.86 and 88,891.56

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Solution

The fourth proportional to 145,449, 200,722.86 and 88,891.56 is: 122,672.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,449 : 200,722.86 = 88,891.56 : x
  2. Step 2: Convert to fraction form
    145,449/200,722.86 = 88,891.56/x
  3. Step 3: Cross multiply
    145,449x = 200,722.86 × 88,891.56
  4. Step 4: Simplify right side
    145,449x = 17,842,568,153.06
  5. Step 5: Solve for x
    x = 17,842,568,153.06/145,449
  6. Step 6: Final answer
    x = 122,672.33

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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.