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Finding the Fourth Proportional to 159,390.76, 219,812.58 and 104,919.72

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Solution

The fourth proportional to 159,390.76, 219,812.58 and 104,919.72 is: 144,692.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,390.76 : 219,812.58 = 104,919.72 : x
  2. Step 2: Convert to fraction form
    159,390.76/219,812.58 = 104,919.72/x
  3. Step 3: Cross multiply
    159,390.76x = 219,812.58 × 104,919.72
  4. Step 4: Simplify right side
    159,390.76x = 23,062,674,346.08
  5. Step 5: Solve for x
    x = 23,062,674,346.08/159,390.76
  6. Step 6: Final answer
    x = 144,692.67

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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.