Home / 128,372.32-192,558.50-48,388.61

Finding the Fourth Proportional to 128,372.32, 192,558.50 and 48,388.61

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Solution

The fourth proportional to 128,372.32, 192,558.50 and 48,388.61 is: 72,582.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,372.32 : 192,558.50 = 48,388.61 : x
  2. Step 2: Convert to fraction form
    128,372.32/192,558.50 = 48,388.61/x
  3. Step 3: Cross multiply
    128,372.32x = 192,558.50 × 48,388.61
  4. Step 4: Simplify right side
    128,372.32x = 9,317,637,916.74
  5. Step 5: Solve for x
    x = 9,317,637,916.74/128,372.32
  6. Step 6: Final answer
    x = 72,582.92

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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.