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Finding the Fourth Proportional to 128,444.88, 192,722.67 and 53,579.77

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Solution

The fourth proportional to 128,444.88, 192,722.67 and 53,579.77 is: 80,392.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,444.88 : 192,722.67 = 53,579.77 : x
  2. Step 2: Convert to fraction form
    128,444.88/192,722.67 = 53,579.77/x
  3. Step 3: Cross multiply
    128,444.88x = 192,722.67 × 53,579.77
  4. Step 4: Simplify right side
    128,444.88x = 10,326,036,332.39
  5. Step 5: Solve for x
    x = 10,326,036,332.39/128,444.88
  6. Step 6: Final answer
    x = 80,392.74

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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.