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Finding the Fourth Proportional to 118,701.80, 178,052.70 and 79,130.60

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Solution

The fourth proportional to 118,701.80, 178,052.70 and 79,130.60 is: 118,695.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,701.80 : 178,052.70 = 79,130.60 : x
  2. Step 2: Convert to fraction form
    118,701.80/178,052.70 = 79,130.60/x
  3. Step 3: Cross multiply
    118,701.80x = 178,052.70 × 79,130.60
  4. Step 4: Simplify right side
    118,701.80x = 14,089,416,982.62
  5. Step 5: Solve for x
    x = 14,089,416,982.62/118,701.80
  6. Step 6: Final answer
    x = 118,695.90

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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.