Home / 139,743.68-192,840.48-76,081.32

Finding the Fourth Proportional to 139,743.68, 192,840.48 and 76,081.32

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Solution

The fourth proportional to 139,743.68, 192,840.48 and 76,081.32 is: 104,989.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,743.68 : 192,840.48 = 76,081.32 : x
  2. Step 2: Convert to fraction form
    139,743.68/192,840.48 = 76,081.32/x
  3. Step 3: Cross multiply
    139,743.68x = 192,840.48 × 76,081.32
  4. Step 4: Simplify right side
    139,743.68x = 14,671,558,267.83
  5. Step 5: Solve for x
    x = 14,671,558,267.83/139,743.68
  6. Step 6: Final answer
    x = 104,989.07

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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.