Home / 145,266.80-217,900.20-120,383.60

Finding the Fourth Proportional to 145,266.80, 217,900.20 and 120,383.60

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Solution

The fourth proportional to 145,266.80, 217,900.20 and 120,383.60 is: 180,575.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,266.80 : 217,900.20 = 120,383.60 : x
  2. Step 2: Convert to fraction form
    145,266.80/217,900.20 = 120,383.60/x
  3. Step 3: Cross multiply
    145,266.80x = 217,900.20 × 120,383.60
  4. Step 4: Simplify right side
    145,266.80x = 26,231,610,516.72
  5. Step 5: Solve for x
    x = 26,231,610,516.72/145,266.80
  6. Step 6: Final answer
    x = 180,575.40

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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.