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Finding the Fourth Proportional to 181,420.80, 272,131.20 and 125,433.60

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Solution

The fourth proportional to 181,420.80, 272,131.20 and 125,433.60 is: 188,150.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,420.80 : 272,131.20 = 125,433.60 : x
  2. Step 2: Convert to fraction form
    181,420.80/272,131.20 = 125,433.60/x
  3. Step 3: Cross multiply
    181,420.80x = 272,131.20 × 125,433.60
  4. Step 4: Simplify right side
    181,420.80x = 34,134,396,088.32
  5. Step 5: Solve for x
    x = 34,134,396,088.32/181,420.80
  6. Step 6: Final answer
    x = 188,150.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.