Home / 190,729.58-286,187.31-78,443.46

Finding the Fourth Proportional to 190,729.58, 286,187.31 and 78,443.46

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Solution

The fourth proportional to 190,729.58, 286,187.31 and 78,443.46 is: 117,703.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,729.58 : 286,187.31 = 78,443.46 : x
  2. Step 2: Convert to fraction form
    190,729.58/286,187.31 = 78,443.46/x
  3. Step 3: Cross multiply
    190,729.58x = 286,187.31 × 78,443.46
  4. Step 4: Simplify right side
    190,729.58x = 22,449,522,804.49
  5. Step 5: Solve for x
    x = 22,449,522,804.49/190,729.58
  6. Step 6: Final answer
    x = 117,703.42

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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.