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Finding the Fourth Proportional to 181,679.60, 272,616.60 and 76,509.20

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Solution

The fourth proportional to 181,679.60, 272,616.60 and 76,509.20 is: 114,804.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,679.60 : 272,616.60 = 76,509.20 : x
  2. Step 2: Convert to fraction form
    181,679.60/272,616.60 = 76,509.20/x
  3. Step 3: Cross multiply
    181,679.60x = 272,616.60 × 76,509.20
  4. Step 4: Simplify right side
    181,679.60x = 20,857,677,972.72
  5. Step 5: Solve for x
    x = 20,857,677,972.72/181,679.60
  6. Step 6: Final answer
    x = 114,804.73

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1.5x scale

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.