Home / 189,918.68-262,116.21-118,321.77

Finding the Fourth Proportional to 189,918.68, 262,116.21 and 118,321.77

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Solution

The fourth proportional to 189,918.68, 262,116.21 and 118,321.77 is: 163,301.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,918.68 : 262,116.21 = 118,321.77 : x
  2. Step 2: Convert to fraction form
    189,918.68/262,116.21 = 118,321.77/x
  3. Step 3: Cross multiply
    189,918.68x = 262,116.21 × 118,321.77
  4. Step 4: Simplify right side
    189,918.68x = 31,014,053,912.89
  5. Step 5: Solve for x
    x = 31,014,053,912.89/189,918.68
  6. Step 6: Final answer
    x = 163,301.76

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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.