Home / 103,438.03-142,734.40-58,105.75

Finding the Fourth Proportional to 103,438.03, 142,734.40 and 58,105.75

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Solution

The fourth proportional to 103,438.03, 142,734.40 and 58,105.75 is: 80,180.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,438.03 : 142,734.40 = 58,105.75 : x
  2. Step 2: Convert to fraction form
    103,438.03/142,734.40 = 58,105.75/x
  3. Step 3: Cross multiply
    103,438.03x = 142,734.40 × 58,105.75
  4. Step 4: Simplify right side
    103,438.03x = 8,293,689,362.80
  5. Step 5: Solve for x
    x = 8,293,689,362.80/103,438.03
  6. Step 6: Final answer
    x = 80,180.27

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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.