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Finding the Fourth Proportional to 158,367.53, 218,546.82 and 85,770.20

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Solution

The fourth proportional to 158,367.53, 218,546.82 and 85,770.20 is: 118,362.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,367.53 : 218,546.82 = 85,770.20 : x
  2. Step 2: Convert to fraction form
    158,367.53/218,546.82 = 85,770.20/x
  3. Step 3: Cross multiply
    158,367.53x = 218,546.82 × 85,770.20
  4. Step 4: Simplify right side
    158,367.53x = 18,744,803,368.03
  5. Step 5: Solve for x
    x = 18,744,803,368.03/158,367.53
  6. Step 6: Final answer
    x = 118,362.67

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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.