Home / 103,961.31-143,466.09-63,111.20

Finding the Fourth Proportional to 103,961.31, 143,466.09 and 63,111.20

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Solution

The fourth proportional to 103,961.31, 143,466.09 and 63,111.20 is: 87,093.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,961.31 : 143,466.09 = 63,111.20 : x
  2. Step 2: Convert to fraction form
    103,961.31/143,466.09 = 63,111.20/x
  3. Step 3: Cross multiply
    103,961.31x = 143,466.09 × 63,111.20
  4. Step 4: Simplify right side
    103,961.31x = 9,054,316,381.88
  5. Step 5: Solve for x
    x = 9,054,316,381.88/103,961.31
  6. Step 6: Final answer
    x = 87,093.13

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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.