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Finding the Fourth Proportional to 159,758.60, 239,346.30 and 130,015.40

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Solution

The fourth proportional to 159,758.60, 239,346.30 and 130,015.40 is: 194,785.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,758.60 : 239,346.30 = 130,015.40 : x
  2. Step 2: Convert to fraction form
    159,758.60/239,346.30 = 130,015.40/x
  3. Step 3: Cross multiply
    159,758.60x = 239,346.30 × 130,015.40
  4. Step 4: Simplify right side
    159,758.60x = 31,118,704,933.02
  5. Step 5: Solve for x
    x = 31,118,704,933.02/159,758.60
  6. Step 6: Final answer
    x = 194,785.79

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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.