Home / 134,942.78-186,237.46-78,354.16

Finding the Fourth Proportional to 134,942.78, 186,237.46 and 78,354.16

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Solution

The fourth proportional to 134,942.78, 186,237.46 and 78,354.16 is: 108,138.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,942.78 : 186,237.46 = 78,354.16 : x
  2. Step 2: Convert to fraction form
    134,942.78/186,237.46 = 78,354.16/x
  3. Step 3: Cross multiply
    134,942.78x = 186,237.46 × 78,354.16
  4. Step 4: Simplify right side
    134,942.78x = 14,592,479,738.83
  5. Step 5: Solve for x
    x = 14,592,479,738.83/134,942.78
  6. Step 6: Final answer
    x = 108,138.28

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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.