Home / 103,718.43-143,133.26-61,276.86

Finding the Fourth Proportional to 103,718.43, 143,133.26 and 61,276.86

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Solution

The fourth proportional to 103,718.43, 143,133.26 and 61,276.86 is: 84,563.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,718.43 : 143,133.26 = 61,276.86 : x
  2. Step 2: Convert to fraction form
    103,718.43/143,133.26 = 61,276.86/x
  3. Step 3: Cross multiply
    103,718.43x = 143,133.26 × 61,276.86
  4. Step 4: Simplify right side
    103,718.43x = 8,770,756,427.98
  5. Step 5: Solve for x
    x = 8,770,756,427.98/103,718.43
  6. Step 6: Final answer
    x = 84,563.14

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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.