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Finding the Fourth Proportional to 181,809.20, 272,713.80 and 118,823.60

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Solution

The fourth proportional to 181,809.20, 272,713.80 and 118,823.60 is: 178,235.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,809.20 : 272,713.80 = 118,823.60 : x
  2. Step 2: Convert to fraction form
    181,809.20/272,713.80 = 118,823.60/x
  3. Step 3: Cross multiply
    181,809.20x = 272,713.80 × 118,823.60
  4. Step 4: Simplify right side
    181,809.20x = 32,404,835,485.68
  5. Step 5: Solve for x
    x = 32,404,835,485.68/181,809.20
  6. Step 6: Final answer
    x = 178,235.40

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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.