Home / 103,718.46-143,134.37-63,431.50

Finding the Fourth Proportional to 103,718.46, 143,134.37 and 63,431.50

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Solution

The fourth proportional to 103,718.46, 143,134.37 and 63,431.50 is: 87,537.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,718.46 : 143,134.37 = 63,431.50 : x
  2. Step 2: Convert to fraction form
    103,718.46/143,134.37 = 63,431.50/x
  3. Step 3: Cross multiply
    103,718.46x = 143,134.37 × 63,431.50
  4. Step 4: Simplify right side
    103,718.46x = 9,079,227,790.66
  5. Step 5: Solve for x
    x = 9,079,227,790.66/103,718.46
  6. Step 6: Final answer
    x = 87,537.24

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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.