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Finding the Fourth Proportional to 181,428.80, 250,370.40 and 100,863.68

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Solution

The fourth proportional to 181,428.80, 250,370.40 and 100,863.68 is: 139,191.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,428.80 : 250,370.40 = 100,863.68 : x
  2. Step 2: Convert to fraction form
    181,428.80/250,370.40 = 100,863.68/x
  3. Step 3: Cross multiply
    181,428.80x = 250,370.40 × 100,863.68
  4. Step 4: Simplify right side
    181,428.80x = 25,253,279,907.07
  5. Step 5: Solve for x
    x = 25,253,279,907.07/181,428.80
  6. Step 6: Final answer
    x = 139,191.13

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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.