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Finding the Fourth Proportional to 181,290.83, 250,185.74 and 100,721.75

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Solution

The fourth proportional to 181,290.83, 250,185.74 and 100,721.75 is: 138,998.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,290.83 : 250,185.74 = 100,721.75 : x
  2. Step 2: Convert to fraction form
    181,290.83/250,185.74 = 100,721.75/x
  3. Step 3: Cross multiply
    181,290.83x = 250,185.74 × 100,721.75
  4. Step 4: Simplify right side
    181,290.83x = 25,199,143,803.31
  5. Step 5: Solve for x
    x = 25,199,143,803.31/181,290.83
  6. Step 6: Final answer
    x = 138,998.45

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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.