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Finding the Fourth Proportional to 137,460.48, 206,270.08 and 74,280.80

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Solution

The fourth proportional to 137,460.48, 206,270.08 and 74,280.80 is: 111,464.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,460.48 : 206,270.08 = 74,280.80 : x
  2. Step 2: Convert to fraction form
    137,460.48/206,270.08 = 74,280.80/x
  3. Step 3: Cross multiply
    137,460.48x = 206,270.08 × 74,280.80
  4. Step 4: Simplify right side
    137,460.48x = 15,321,906,558.46
  5. Step 5: Solve for x
    x = 15,321,906,558.46/137,460.48
  6. Step 6: Final answer
    x = 111,464.08

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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.