Home / 114,701.36-172,083.06-81,631.35

Finding the Fourth Proportional to 114,701.36, 172,083.06 and 81,631.35

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Solution

The fourth proportional to 114,701.36, 172,083.06 and 81,631.35 is: 122,469.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,701.36 : 172,083.06 = 81,631.35 : x
  2. Step 2: Convert to fraction form
    114,701.36/172,083.06 = 81,631.35/x
  3. Step 3: Cross multiply
    114,701.36x = 172,083.06 × 81,631.35
  4. Step 4: Simplify right side
    114,701.36x = 14,047,372,499.93
  5. Step 5: Solve for x
    x = 14,047,372,499.93/114,701.36
  6. Step 6: Final answer
    x = 122,469.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.