Home / 100,996.12-139,374.59-55,674.84

Finding the Fourth Proportional to 100,996.12, 139,374.59 and 55,674.84

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Solution

The fourth proportional to 100,996.12, 139,374.59 and 55,674.84 is: 76,831.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,996.12 : 139,374.59 = 55,674.84 : x
  2. Step 2: Convert to fraction form
    100,996.12/139,374.59 = 55,674.84/x
  3. Step 3: Cross multiply
    100,996.12x = 139,374.59 × 55,674.84
  4. Step 4: Simplify right side
    100,996.12x = 7,759,658,137.50
  5. Step 5: Solve for x
    x = 7,759,658,137.50/100,996.12
  6. Step 6: Final answer
    x = 76,831.25

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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.