Home / 139,743.98-192,850.16-76,085.28

Finding the Fourth Proportional to 139,743.98, 192,850.16 and 76,085.28

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Solution

The fourth proportional to 139,743.98, 192,850.16 and 76,085.28 is: 104,999.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,743.98 : 192,850.16 = 76,085.28 : x
  2. Step 2: Convert to fraction form
    139,743.98/192,850.16 = 76,085.28/x
  3. Step 3: Cross multiply
    139,743.98x = 192,850.16 × 76,085.28
  4. Step 4: Simplify right side
    139,743.98x = 14,673,058,421.64
  5. Step 5: Solve for x
    x = 14,673,058,421.64/139,743.98
  6. Step 6: Final answer
    x = 104,999.57

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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.