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Finding the Fourth Proportional to 118,064.40, 177,080.40 and 39,170.40

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Solution

The fourth proportional to 118,064.40, 177,080.40 and 39,170.40 is: 58,750.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,064.40 : 177,080.40 = 39,170.40 : x
  2. Step 2: Convert to fraction form
    118,064.40/177,080.40 = 39,170.40/x
  3. Step 3: Cross multiply
    118,064.40x = 177,080.40 × 39,170.40
  4. Step 4: Simplify right side
    118,064.40x = 6,936,310,100.16
  5. Step 5: Solve for x
    x = 6,936,310,100.16/118,064.40
  6. Step 6: Final answer
    x = 58,750.23

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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.