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Finding the Fourth Proportional to 159,312.81, 219,851.68 and 87,692.51

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Solution

The fourth proportional to 159,312.81, 219,851.68 and 87,692.51 is: 121,015.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,312.81 : 219,851.68 = 87,692.51 : x
  2. Step 2: Convert to fraction form
    159,312.81/219,851.68 = 87,692.51/x
  3. Step 3: Cross multiply
    159,312.81x = 219,851.68 × 87,692.51
  4. Step 4: Simplify right side
    159,312.81x = 19,279,345,646.92
  5. Step 5: Solve for x
    x = 19,279,345,646.92/159,312.81
  6. Step 6: Final answer
    x = 121,015.67

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