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Finding the Fourth Proportional to 173,639.60, 261,042.60 and 147,978.80

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Solution

The fourth proportional to 173,639.60, 261,042.60 and 147,978.80 is: 222,465.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,639.60 : 261,042.60 = 147,978.80 : x
  2. Step 2: Convert to fraction form
    173,639.60/261,042.60 = 147,978.80/x
  3. Step 3: Cross multiply
    173,639.60x = 261,042.60 × 147,978.80
  4. Step 4: Simplify right side
    173,639.60x = 38,628,770,696.88
  5. Step 5: Solve for x
    x = 38,628,770,696.88/173,639.60
  6. Step 6: Final answer
    x = 222,465.21

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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.