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Finding the Fourth Proportional to 104,885.42, 144,742.01 and 57,138.89

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Solution

The fourth proportional to 104,885.42, 144,742.01 and 57,138.89 is: 78,851.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,885.42 : 144,742.01 = 57,138.89 : x
  2. Step 2: Convert to fraction form
    104,885.42/144,742.01 = 57,138.89/x
  3. Step 3: Cross multiply
    104,885.42x = 144,742.01 × 57,138.89
  4. Step 4: Simplify right side
    104,885.42x = 8,270,396,778.36
  5. Step 5: Solve for x
    x = 8,270,396,778.36/104,885.42
  6. Step 6: Final answer
    x = 78,851.73

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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.