Home / 123,369.20-185,140.20-79,103.60

Finding the Fourth Proportional to 123,369.20, 185,140.20 and 79,103.60

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Solution

The fourth proportional to 123,369.20, 185,140.20 and 79,103.60 is: 118,710.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,369.20 : 185,140.20 = 79,103.60 : x
  2. Step 2: Convert to fraction form
    123,369.20/185,140.20 = 79,103.60/x
  3. Step 3: Cross multiply
    123,369.20x = 185,140.20 × 79,103.60
  4. Step 4: Simplify right side
    123,369.20x = 14,645,256,324.72
  5. Step 5: Solve for x
    x = 14,645,256,324.72/123,369.20
  6. Step 6: Final answer
    x = 118,710.80

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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.