Home / 139,742.98-192,848.78-76,084.28

Finding the Fourth Proportional to 139,742.98, 192,848.78 and 76,084.28

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Solution

The fourth proportional to 139,742.98, 192,848.78 and 76,084.28 is: 104,998.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,742.98 : 192,848.78 = 76,084.28 : x
  2. Step 2: Convert to fraction form
    139,742.98/192,848.78 = 76,084.28/x
  3. Step 3: Cross multiply
    139,742.98x = 192,848.78 × 76,084.28
  4. Step 4: Simplify right side
    139,742.98x = 14,672,760,575.18
  5. Step 5: Solve for x
    x = 14,672,760,575.18/139,742.98
  6. Step 6: Final answer
    x = 104,998.19

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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.