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Finding the Fourth Proportional to 128,011.74, 192,058.65 and 53,167.74

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Solution

The fourth proportional to 128,011.74, 192,058.65 and 53,167.74 is: 79,768.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,011.74 : 192,058.65 = 53,167.74 : x
  2. Step 2: Convert to fraction form
    128,011.74/192,058.65 = 53,167.74/x
  3. Step 3: Cross multiply
    128,011.74x = 192,058.65 × 53,167.74
  4. Step 4: Simplify right side
    128,011.74x = 10,211,324,367.95
  5. Step 5: Solve for x
    x = 10,211,324,367.95/128,011.74
  6. Step 6: Final answer
    x = 79,768.66

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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.