Home / 189,374.85-261,227.07-121,367.70

Finding the Fourth Proportional to 189,374.85, 261,227.07 and 121,367.70

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Solution

The fourth proportional to 189,374.85, 261,227.07 and 121,367.70 is: 167,416.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,374.85 : 261,227.07 = 121,367.70 : x
  2. Step 2: Convert to fraction form
    189,374.85/261,227.07 = 121,367.70/x
  3. Step 3: Cross multiply
    189,374.85x = 261,227.07 × 121,367.70
  4. Step 4: Simplify right side
    189,374.85x = 31,704,528,663.64
  5. Step 5: Solve for x
    x = 31,704,528,663.64/189,374.85
  6. Step 6: Final answer
    x = 167,416.79

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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.