Home / 88,813.20-133,219.80-79,136.40

Finding the Fourth Proportional to 88,813.20, 133,219.80 and 79,136.40

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Solution

The fourth proportional to 88,813.20, 133,219.80 and 79,136.40 is: 118,704.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,813.20 : 133,219.80 = 79,136.40 : x
  2. Step 2: Convert to fraction form
    88,813.20/133,219.80 = 79,136.40/x
  3. Step 3: Cross multiply
    88,813.20x = 133,219.80 × 79,136.40
  4. Step 4: Simplify right side
    88,813.20x = 10,542,535,380.72
  5. Step 5: Solve for x
    x = 10,542,535,380.72/88,813.20
  6. Step 6: Final answer
    x = 118,704.60

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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.