Home / 128,403.30-192,567.34-48,383.54

Finding the Fourth Proportional to 128,403.30, 192,567.34 and 48,383.54

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Solution

The fourth proportional to 128,403.30, 192,567.34 and 48,383.54 is: 72,561.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,403.30 : 192,567.34 = 48,383.54 : x
  2. Step 2: Convert to fraction form
    128,403.30/192,567.34 = 48,383.54/x
  3. Step 3: Cross multiply
    128,403.30x = 192,567.34 × 48,383.54
  4. Step 4: Simplify right side
    128,403.30x = 9,317,089,417.35
  5. Step 5: Solve for x
    x = 9,317,089,417.35/128,403.30
  6. Step 6: Final answer
    x = 72,561.13

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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.