Home / 122,857.28-184,271.30-72,286.55

Finding the Fourth Proportional to 122,857.28, 184,271.30 and 72,286.55

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Solution

The fourth proportional to 122,857.28, 184,271.30 and 72,286.55 is: 108,421.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,857.28 : 184,271.30 = 72,286.55 : x
  2. Step 2: Convert to fraction form
    122,857.28/184,271.30 = 72,286.55/x
  3. Step 3: Cross multiply
    122,857.28x = 184,271.30 × 72,286.55
  4. Step 4: Simplify right side
    122,857.28x = 13,320,336,541.02
  5. Step 5: Solve for x
    x = 13,320,336,541.02/122,857.28
  6. Step 6: Final answer
    x = 108,421.22

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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.