Home / 122,520.69-169,093.85-74,776.05

Finding the Fourth Proportional to 122,520.69, 169,093.85 and 74,776.05

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Solution

The fourth proportional to 122,520.69, 169,093.85 and 74,776.05 is: 103,200.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,520.69 : 169,093.85 = 74,776.05 : x
  2. Step 2: Convert to fraction form
    122,520.69/169,093.85 = 74,776.05/x
  3. Step 3: Cross multiply
    122,520.69x = 169,093.85 × 74,776.05
  4. Step 4: Simplify right side
    122,520.69x = 12,644,169,808.41
  5. Step 5: Solve for x
    x = 12,644,169,808.41/122,520.69
  6. Step 6: Final answer
    x = 103,200.28

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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.