Home / 103,638.75-143,021.48-58,926.75

Finding the Fourth Proportional to 103,638.75, 143,021.48 and 58,926.75

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Solution

The fourth proportional to 103,638.75, 143,021.48 and 58,926.75 is: 81,318.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,638.75 : 143,021.48 = 58,926.75 : x
  2. Step 2: Convert to fraction form
    103,638.75/143,021.48 = 58,926.75/x
  3. Step 3: Cross multiply
    103,638.75x = 143,021.48 × 58,926.75
  4. Step 4: Simplify right side
    103,638.75x = 8,427,790,996.59
  5. Step 5: Solve for x
    x = 8,427,790,996.59/103,638.75
  6. Step 6: Final answer
    x = 81,318.92

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1.5x scale

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.