Home / 120,836.80-181,082.40-83,857.60

Finding the Fourth Proportional to 120,836.80, 181,082.40 and 83,857.60

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Solution

The fourth proportional to 120,836.80, 181,082.40 and 83,857.60 is: 125,666.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,836.80 : 181,082.40 = 83,857.60 : x
  2. Step 2: Convert to fraction form
    120,836.80/181,082.40 = 83,857.60/x
  3. Step 3: Cross multiply
    120,836.80x = 181,082.40 × 83,857.60
  4. Step 4: Simplify right side
    120,836.80x = 15,185,135,466.24
  5. Step 5: Solve for x
    x = 15,185,135,466.24/120,836.80
  6. Step 6: Final answer
    x = 125,666.48

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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.