Home / 122,779.20-184,168.72-81,216.48

Finding the Fourth Proportional to 122,779.20, 184,168.72 and 81,216.48

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Solution

The fourth proportional to 122,779.20, 184,168.72 and 81,216.48 is: 121,824.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,779.20 : 184,168.72 = 81,216.48 : x
  2. Step 2: Convert to fraction form
    122,779.20/184,168.72 = 81,216.48/x
  3. Step 3: Cross multiply
    122,779.20x = 184,168.72 × 81,216.48
  4. Step 4: Simplify right side
    122,779.20x = 14,957,535,164.51
  5. Step 5: Solve for x
    x = 14,957,535,164.51/122,779.20
  6. Step 6: Final answer
    x = 121,824.67

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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.