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Finding the Fourth Proportional to 181,390.38, 250,322.98 and 100,821.30

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Solution

The fourth proportional to 181,390.38, 250,322.98 and 100,821.30 is: 139,135.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,390.38 : 250,322.98 = 100,821.30 : x
  2. Step 2: Convert to fraction form
    181,390.38/250,322.98 = 100,821.30/x
  3. Step 3: Cross multiply
    181,390.38x = 250,322.98 × 100,821.30
  4. Step 4: Simplify right side
    181,390.38x = 25,237,888,263.47
  5. Step 5: Solve for x
    x = 25,237,888,263.47/181,390.38
  6. Step 6: Final answer
    x = 139,135.76

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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.