Home / 189,641.76-261,666.98-120,758.94

Finding the Fourth Proportional to 189,641.76, 261,666.98 and 120,758.94

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Solution

The fourth proportional to 189,641.76, 261,666.98 and 120,758.94 is: 166,622.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,641.76 : 261,666.98 = 120,758.94 : x
  2. Step 2: Convert to fraction form
    189,641.76/261,666.98 = 120,758.94/x
  3. Step 3: Cross multiply
    189,641.76x = 261,666.98 × 120,758.94
  4. Step 4: Simplify right side
    189,641.76x = 31,598,627,137.80
  5. Step 5: Solve for x
    x = 31,598,627,137.80/189,641.76
  6. Step 6: Final answer
    x = 166,622.73

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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.