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Finding the Fourth Proportional to 158,789.64, 238,189.50 and 79,860.76

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Solution

The fourth proportional to 158,789.64, 238,189.50 and 79,860.76 is: 119,793.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,789.64 : 238,189.50 = 79,860.76 : x
  2. Step 2: Convert to fraction form
    158,789.64/238,189.50 = 79,860.76/x
  3. Step 3: Cross multiply
    158,789.64x = 238,189.50 × 79,860.76
  4. Step 4: Simplify right side
    158,789.64x = 19,021,994,494.02
  5. Step 5: Solve for x
    x = 19,021,994,494.02/158,789.64
  6. Step 6: Final answer
    x = 119,793.67

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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.