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Finding the Fourth Proportional to 183,478.40, 275,217.60 and 121,148.90

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Solution

The fourth proportional to 183,478.40, 275,217.60 and 121,148.90 is: 181,723.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,478.40 : 275,217.60 = 121,148.90 : x
  2. Step 2: Convert to fraction form
    183,478.40/275,217.60 = 121,148.90/x
  3. Step 3: Cross multiply
    183,478.40x = 275,217.60 × 121,148.90
  4. Step 4: Simplify right side
    183,478.40x = 33,342,309,500.64
  5. Step 5: Solve for x
    x = 33,342,309,500.64/183,478.40
  6. Step 6: Final answer
    x = 181,723.35

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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.