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Finding the Fourth Proportional to 118,647, 177,970.52 and 39,761.40

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Solution

The fourth proportional to 118,647, 177,970.52 and 39,761.40 is: 59,642.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,647 : 177,970.52 = 39,761.40 : x
  2. Step 2: Convert to fraction form
    118,647/177,970.52 = 39,761.40/x
  3. Step 3: Cross multiply
    118,647x = 177,970.52 × 39,761.40
  4. Step 4: Simplify right side
    118,647x = 7,076,357,033.93
  5. Step 5: Solve for x
    x = 7,076,357,033.93/118,647
  6. Step 6: Final answer
    x = 59,642.11

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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.