Home / 123,618.40-185,427.60-67,436.80

Finding the Fourth Proportional to 123,618.40, 185,427.60 and 67,436.80

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Solution

The fourth proportional to 123,618.40, 185,427.60 and 67,436.80 is: 101,155.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,618.40 : 185,427.60 = 67,436.80 : x
  2. Step 2: Convert to fraction form
    123,618.40/185,427.60 = 67,436.80/x
  3. Step 3: Cross multiply
    123,618.40x = 185,427.60 × 67,436.80
  4. Step 4: Simplify right side
    123,618.40x = 12,504,643,975.68
  5. Step 5: Solve for x
    x = 12,504,643,975.68/123,618.40
  6. Step 6: Final answer
    x = 101,155.20

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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.