Home / 128,317.39-192,372.10-53,493.64

Finding the Fourth Proportional to 128,317.39, 192,372.10 and 53,493.64

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Solution

The fourth proportional to 128,317.39, 192,372.10 and 53,493.64 is: 80,197.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,317.39 : 192,372.10 = 53,493.64 : x
  2. Step 2: Convert to fraction form
    128,317.39/192,372.10 = 53,493.64/x
  3. Step 3: Cross multiply
    128,317.39x = 192,372.10 × 53,493.64
  4. Step 4: Simplify right side
    128,317.39x = 10,290,683,248.78
  5. Step 5: Solve for x
    x = 10,290,683,248.78/128,317.39
  6. Step 6: Final answer
    x = 80,197.11

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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.