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Finding the Fourth Proportional to 117,321.80, 175,982.70 and 38,438.60

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Solution

The fourth proportional to 117,321.80, 175,982.70 and 38,438.60 is: 57,657.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,321.80 : 175,982.70 = 38,438.60 : x
  2. Step 2: Convert to fraction form
    117,321.80/175,982.70 = 38,438.60/x
  3. Step 3: Cross multiply
    117,321.80x = 175,982.70 × 38,438.60
  4. Step 4: Simplify right side
    117,321.80x = 6,764,528,612.22
  5. Step 5: Solve for x
    x = 6,764,528,612.22/117,321.80
  6. Step 6: Final answer
    x = 57,657.90

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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.