Home / 189,434.62-261,448.05-121,528.27

Finding the Fourth Proportional to 189,434.62, 261,448.05 and 121,528.27

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Solution

The fourth proportional to 189,434.62, 261,448.05 and 121,528.27 is: 167,727.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,434.62 : 261,448.05 = 121,528.27 : x
  2. Step 2: Convert to fraction form
    189,434.62/261,448.05 = 121,528.27/x
  3. Step 3: Cross multiply
    189,434.62x = 261,448.05 × 121,528.27
  4. Step 4: Simplify right side
    189,434.62x = 31,773,329,211.37
  5. Step 5: Solve for x
    x = 31,773,329,211.37/189,434.62
  6. Step 6: Final answer
    x = 167,727.15

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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.