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Finding the Fourth Proportional to 181,806.40, 272,709.60 and 118,820.80

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Solution

The fourth proportional to 181,806.40, 272,709.60 and 118,820.80 is: 178,231.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,806.40 : 272,709.60 = 118,820.80 : x
  2. Step 2: Convert to fraction form
    181,806.40/272,709.60 = 118,820.80/x
  3. Step 3: Cross multiply
    181,806.40x = 272,709.60 × 118,820.80
  4. Step 4: Simplify right side
    181,806.40x = 32,403,572,839.68
  5. Step 5: Solve for x
    x = 32,403,572,839.68/181,806.40
  6. Step 6: Final answer
    x = 178,231.20

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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.