Home / 105,519.75-158,279.63-31,647.75

Finding the Fourth Proportional to 105,519.75, 158,279.63 and 31,647.75

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Solution

The fourth proportional to 105,519.75, 158,279.63 and 31,647.75 is: 47,471.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,519.75 : 158,279.63 = 31,647.75 : x
  2. Step 2: Convert to fraction form
    105,519.75/158,279.63 = 31,647.75/x
  3. Step 3: Cross multiply
    105,519.75x = 158,279.63 × 31,647.75
  4. Step 4: Simplify right side
    105,519.75x = 5,009,194,002.09
  5. Step 5: Solve for x
    x = 5,009,194,002.09/105,519.75
  6. Step 6: Final answer
    x = 47,471.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.