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Finding the Fourth Proportional to 128,493.95, 192,637.04 and 53,671.41

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Solution

The fourth proportional to 128,493.95, 192,637.04 and 53,671.41 is: 80,463.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,493.95 : 192,637.04 = 53,671.41 : x
  2. Step 2: Convert to fraction form
    128,493.95/192,637.04 = 53,671.41/x
  3. Step 3: Cross multiply
    128,493.95x = 192,637.04 × 53,671.41
  4. Step 4: Simplify right side
    128,493.95x = 10,339,101,286.67
  5. Step 5: Solve for x
    x = 10,339,101,286.67/128,493.95
  6. Step 6: Final answer
    x = 80,463.72

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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.