Home / 120,021.32-165,558.16-77,604.86

Finding the Fourth Proportional to 120,021.32, 165,558.16 and 77,604.86

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Solution

The fourth proportional to 120,021.32, 165,558.16 and 77,604.86 is: 107,048.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,021.32 : 165,558.16 = 77,604.86 : x
  2. Step 2: Convert to fraction form
    120,021.32/165,558.16 = 77,604.86/x
  3. Step 3: Cross multiply
    120,021.32x = 165,558.16 × 77,604.86
  4. Step 4: Simplify right side
    120,021.32x = 12,848,118,339.56
  5. Step 5: Solve for x
    x = 12,848,118,339.56/120,021.32
  6. Step 6: Final answer
    x = 107,048.63

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1.5x scale

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.