Home / 158,742.21-219,077.70-87,134.37

Finding the Fourth Proportional to 158,742.21, 219,077.70 and 87,134.37

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Solution

The fourth proportional to 158,742.21, 219,077.70 and 87,134.37 is: 120,252.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,742.21 : 219,077.70 = 87,134.37 : x
  2. Step 2: Convert to fraction form
    158,742.21/219,077.70 = 87,134.37/x
  3. Step 3: Cross multiply
    158,742.21x = 219,077.70 × 87,134.37
  4. Step 4: Simplify right side
    158,742.21x = 19,089,197,370.55
  5. Step 5: Solve for x
    x = 19,089,197,370.55/158,742.21
  6. Step 6: Final answer
    x = 120,252.81

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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.