Home / 139,743.86-192,840.09-76,081.46

Finding the Fourth Proportional to 139,743.86, 192,840.09 and 76,081.46

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Solution

The fourth proportional to 139,743.86, 192,840.09 and 76,081.46 is: 104,988.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,743.86 : 192,840.09 = 76,081.46 : x
  2. Step 2: Convert to fraction form
    139,743.86/192,840.09 = 76,081.46/x
  3. Step 3: Cross multiply
    139,743.86x = 192,840.09 × 76,081.46
  4. Step 4: Simplify right side
    139,743.86x = 14,671,555,593.73
  5. Step 5: Solve for x
    x = 14,671,555,593.73/139,743.86
  6. Step 6: Final answer
    x = 104,988.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.