Home / 101,011.06-139,396.23-55,690.72

Finding the Fourth Proportional to 101,011.06, 139,396.23 and 55,690.72

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Solution

The fourth proportional to 101,011.06, 139,396.23 and 55,690.72 is: 76,853.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,011.06 : 139,396.23 = 55,690.72 : x
  2. Step 2: Convert to fraction form
    101,011.06/139,396.23 = 55,690.72/x
  3. Step 3: Cross multiply
    101,011.06x = 139,396.23 × 55,690.72
  4. Step 4: Simplify right side
    101,011.06x = 7,763,076,413.99
  5. Step 5: Solve for x
    x = 7,763,076,413.99/101,011.06
  6. Step 6: Final answer
    x = 76,853.73

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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.