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Finding the Fourth Proportional to 109,072.60, 163,608.90 and 88,336.60

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Solution

The fourth proportional to 109,072.60, 163,608.90 and 88,336.60 is: 132,504.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,072.60 : 163,608.90 = 88,336.60 : x
  2. Step 2: Convert to fraction form
    109,072.60/163,608.90 = 88,336.60/x
  3. Step 3: Cross multiply
    109,072.60x = 163,608.90 × 88,336.60
  4. Step 4: Simplify right side
    109,072.60x = 14,452,653,955.74
  5. Step 5: Solve for x
    x = 14,452,653,955.74/109,072.60
  6. Step 6: Final answer
    x = 132,504.90

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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.