Home / 189,928.47-261,844.80-121,827.22

Finding the Fourth Proportional to 189,928.47, 261,844.80 and 121,827.22

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Solution

The fourth proportional to 189,928.47, 261,844.80 and 121,827.22 is: 167,957.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,928.47 : 261,844.80 = 121,827.22 : x
  2. Step 2: Convert to fraction form
    189,928.47/261,844.80 = 121,827.22/x
  3. Step 3: Cross multiply
    189,928.47x = 261,844.80 × 121,827.22
  4. Step 4: Simplify right side
    189,928.47x = 31,899,823,400.84
  5. Step 5: Solve for x
    x = 31,899,823,400.84/189,928.47
  6. Step 6: Final answer
    x = 167,957.04

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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.