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Finding the Fourth Proportional to 118,724.86, 178,068.25 and 43,880.32

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Solution

The fourth proportional to 118,724.86, 178,068.25 and 43,880.32 is: 65,813.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,724.86 : 178,068.25 = 43,880.32 : x
  2. Step 2: Convert to fraction form
    118,724.86/178,068.25 = 43,880.32/x
  3. Step 3: Cross multiply
    118,724.86x = 178,068.25 × 43,880.32
  4. Step 4: Simplify right side
    118,724.86x = 7,813,691,791.84
  5. Step 5: Solve for x
    x = 7,813,691,791.84/118,724.86
  6. Step 6: Final answer
    x = 65,813.44

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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.