Home / 122,415.18-168,975.09-77,169.39

Finding the Fourth Proportional to 122,415.18, 168,975.09 and 77,169.39

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Solution

The fourth proportional to 122,415.18, 168,975.09 and 77,169.39 is: 106,520.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,415.18 : 168,975.09 = 77,169.39 : x
  2. Step 2: Convert to fraction form
    122,415.18/168,975.09 = 77,169.39/x
  3. Step 3: Cross multiply
    122,415.18x = 168,975.09 × 77,169.39
  4. Step 4: Simplify right side
    122,415.18x = 13,039,704,620.50
  5. Step 5: Solve for x
    x = 13,039,704,620.50/122,415.18
  6. Step 6: Final answer
    x = 106,520.32

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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.