Home / 123,384.12-170,270.40-66,795.60

Finding the Fourth Proportional to 123,384.12, 170,270.40 and 66,795.60

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Solution

The fourth proportional to 123,384.12, 170,270.40 and 66,795.60 is: 92,178.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,384.12 : 170,270.40 = 66,795.60 : x
  2. Step 2: Convert to fraction form
    123,384.12/170,270.40 = 66,795.60/x
  3. Step 3: Cross multiply
    123,384.12x = 170,270.40 × 66,795.60
  4. Step 4: Simplify right side
    123,384.12x = 11,373,313,530.24
  5. Step 5: Solve for x
    x = 11,373,313,530.24/123,384.12
  6. Step 6: Final answer
    x = 92,178.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.