Home / 128,212.96-192,337.64-39,473.84

Finding the Fourth Proportional to 128,212.96, 192,337.64 and 39,473.84

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Solution

The fourth proportional to 128,212.96, 192,337.64 and 39,473.84 is: 59,216.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,212.96 : 192,337.64 = 39,473.84 : x
  2. Step 2: Convert to fraction form
    128,212.96/192,337.64 = 39,473.84/x
  3. Step 3: Cross multiply
    128,212.96x = 192,337.64 × 39,473.84
  4. Step 4: Simplify right side
    128,212.96x = 7,592,305,227.34
  5. Step 5: Solve for x
    x = 7,592,305,227.34/128,212.96
  6. Step 6: Final answer
    x = 59,216.36

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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.