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Finding the Fourth Proportional to 181,351.87, 250,271.64 and 100,782.79

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Solution

The fourth proportional to 181,351.87, 250,271.64 and 100,782.79 is: 139,083.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,351.87 : 250,271.64 = 100,782.79 : x
  2. Step 2: Convert to fraction form
    181,351.87/250,271.64 = 100,782.79/x
  3. Step 3: Cross multiply
    181,351.87x = 250,271.64 × 100,782.79
  4. Step 4: Simplify right side
    181,351.87x = 25,223,074,137.08
  5. Step 5: Solve for x
    x = 25,223,074,137.08/181,351.87
  6. Step 6: Final answer
    x = 139,083.62

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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.