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Finding the Fourth Proportional to 158,998.46, 219,419.00 and 87,378.30

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Solution

The fourth proportional to 158,998.46, 219,419.00 and 87,378.30 is: 120,582.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,998.46 : 219,419.00 = 87,378.30 : x
  2. Step 2: Convert to fraction form
    158,998.46/219,419.00 = 87,378.30/x
  3. Step 3: Cross multiply
    158,998.46x = 219,419.00 × 87,378.30
  4. Step 4: Simplify right side
    158,998.46x = 19,172,458,770.81
  5. Step 5: Solve for x
    x = 19,172,458,770.81/158,998.46
  6. Step 6: Final answer
    x = 120,582.67

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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.