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Finding the Fourth Proportional to 128,580.74, 192,777.68 and 53,722.29

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Solution

The fourth proportional to 128,580.74, 192,777.68 and 53,722.29 is: 80,544.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,580.74 : 192,777.68 = 53,722.29 : x
  2. Step 2: Convert to fraction form
    128,580.74/192,777.68 = 53,722.29/x
  3. Step 3: Cross multiply
    128,580.74x = 192,777.68 × 53,722.29
  4. Step 4: Simplify right side
    128,580.74x = 10,356,458,430.49
  5. Step 5: Solve for x
    x = 10,356,458,430.49/128,580.74
  6. Step 6: Final answer
    x = 80,544.40

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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.