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Finding the Fourth Proportional to 180,607.12, 270,936.08 and 75,402.16

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Solution

The fourth proportional to 180,607.12, 270,936.08 and 75,402.16 is: 113,113.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,607.12 : 270,936.08 = 75,402.16 : x
  2. Step 2: Convert to fraction form
    180,607.12/270,936.08 = 75,402.16/x
  3. Step 3: Cross multiply
    180,607.12x = 270,936.08 × 75,402.16
  4. Step 4: Simplify right side
    180,607.12x = 20,429,165,653.93
  5. Step 5: Solve for x
    x = 20,429,165,653.93/180,607.12
  6. Step 6: Final answer
    x = 113,113.84

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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.