Home / 189,367.35-261,216.74-121,360.16

Finding the Fourth Proportional to 189,367.35, 261,216.74 and 121,360.16

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Solution

The fourth proportional to 189,367.35, 261,216.74 and 121,360.16 is: 167,406.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,367.35 : 261,216.74 = 121,360.16 : x
  2. Step 2: Convert to fraction form
    189,367.35/261,216.74 = 121,360.16/x
  3. Step 3: Cross multiply
    189,367.35x = 261,216.74 × 121,360.16
  4. Step 4: Simplify right side
    189,367.35x = 31,701,303,448.19
  5. Step 5: Solve for x
    x = 31,701,303,448.19/189,367.35
  6. Step 6: Final answer
    x = 167,406.38

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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.