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Finding the Fourth Proportional to 159,173.13, 219,690.12 and 91,235.67

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Solution

The fourth proportional to 159,173.13, 219,690.12 and 91,235.67 is: 125,923.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,173.13 : 219,690.12 = 91,235.67 : x
  2. Step 2: Convert to fraction form
    159,173.13/219,690.12 = 91,235.67/x
  3. Step 3: Cross multiply
    159,173.13x = 219,690.12 × 91,235.67
  4. Step 4: Simplify right side
    159,173.13x = 20,043,575,290.58
  5. Step 5: Solve for x
    x = 20,043,575,290.58/159,173.13
  6. Step 6: Final answer
    x = 125,923.11

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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.