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Finding the Fourth Proportional to 137,059.20, 205,588.80 and 74,073.60

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Solution

The fourth proportional to 137,059.20, 205,588.80 and 74,073.60 is: 111,110.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,059.20 : 205,588.80 = 74,073.60 : x
  2. Step 2: Convert to fraction form
    137,059.20/205,588.80 = 74,073.60/x
  3. Step 3: Cross multiply
    137,059.20x = 205,588.80 × 74,073.60
  4. Step 4: Simplify right side
    137,059.20x = 15,228,702,535.68
  5. Step 5: Solve for x
    x = 15,228,702,535.68/137,059.20
  6. Step 6: Final answer
    x = 111,110.40

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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.