Home / 194,288.40-291,346.20-89,139.60

Finding the Fourth Proportional to 194,288.40, 291,346.20 and 89,139.60

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Solution

The fourth proportional to 194,288.40, 291,346.20 and 89,139.60 is: 133,669.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,288.40 : 291,346.20 = 89,139.60 : x
  2. Step 2: Convert to fraction form
    194,288.40/291,346.20 = 89,139.60/x
  3. Step 3: Cross multiply
    194,288.40x = 291,346.20 × 89,139.60
  4. Step 4: Simplify right side
    194,288.40x = 25,970,483,729.52
  5. Step 5: Solve for x
    x = 25,970,483,729.52/194,288.40
  6. Step 6: Final answer
    x = 133,669.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.