Home / 120,383.16-180,749.88-88,890.36

Finding the Fourth Proportional to 120,383.16, 180,749.88 and 88,890.36

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Solution

The fourth proportional to 120,383.16, 180,749.88 and 88,890.36 is: 133,464.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,383.16 : 180,749.88 = 88,890.36 : x
  2. Step 2: Convert to fraction form
    120,383.16/180,749.88 = 88,890.36/x
  3. Step 3: Cross multiply
    120,383.16x = 180,749.88 × 88,890.36
  4. Step 4: Simplify right side
    120,383.16x = 16,066,921,903.16
  5. Step 5: Solve for x
    x = 16,066,921,903.16/120,383.16
  6. Step 6: Final answer
    x = 133,464.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.