Home / 103,520.57-142,857.52-58,198.75

Finding the Fourth Proportional to 103,520.57, 142,857.52 and 58,198.75

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Solution

The fourth proportional to 103,520.57, 142,857.52 and 58,198.75 is: 80,313.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,520.57 : 142,857.52 = 58,198.75 : x
  2. Step 2: Convert to fraction form
    103,520.57/142,857.52 = 58,198.75/x
  3. Step 3: Cross multiply
    103,520.57x = 142,857.52 × 58,198.75
  4. Step 4: Simplify right side
    103,520.57x = 8,314,128,589.46
  5. Step 5: Solve for x
    x = 8,314,128,589.46/103,520.57
  6. Step 6: Final answer
    x = 80,313.79

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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.