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Finding the Fourth Proportional to 144,601.20, 217,420.20 and 121,791.60

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Solution

The fourth proportional to 144,601.20, 217,420.20 and 121,791.60 is: 183,124.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,601.20 : 217,420.20 = 121,791.60 : x
  2. Step 2: Convert to fraction form
    144,601.20/217,420.20 = 121,791.60/x
  3. Step 3: Cross multiply
    144,601.20x = 217,420.20 × 121,791.60
  4. Step 4: Simplify right side
    144,601.20x = 26,479,954,030.32
  5. Step 5: Solve for x
    x = 26,479,954,030.32/144,601.20
  6. Step 6: Final answer
    x = 183,124.03

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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.