Home / 123,436.40-185,154.60-83,778.80

Finding the Fourth Proportional to 123,436.40, 185,154.60 and 83,778.80

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Solution

The fourth proportional to 123,436.40, 185,154.60 and 83,778.80 is: 125,668.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,436.40 : 185,154.60 = 83,778.80 : x
  2. Step 2: Convert to fraction form
    123,436.40/185,154.60 = 83,778.80/x
  3. Step 3: Cross multiply
    123,436.40x = 185,154.60 × 83,778.80
  4. Step 4: Simplify right side
    123,436.40x = 15,512,030,202.48
  5. Step 5: Solve for x
    x = 15,512,030,202.48/123,436.40
  6. Step 6: Final answer
    x = 125,668.20

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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.