Home / 128,346.86-192,474.20-49,421.42

Finding the Fourth Proportional to 128,346.86, 192,474.20 and 49,421.42

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Solution

The fourth proportional to 128,346.86, 192,474.20 and 49,421.42 is: 74,114.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,346.86 : 192,474.20 = 49,421.42 : x
  2. Step 2: Convert to fraction form
    128,346.86/192,474.20 = 49,421.42/x
  3. Step 3: Cross multiply
    128,346.86x = 192,474.20 × 49,421.42
  4. Step 4: Simplify right side
    128,346.86x = 9,512,348,277.36
  5. Step 5: Solve for x
    x = 9,512,348,277.36/128,346.86
  6. Step 6: Final answer
    x = 74,114.38

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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.