Home / 122,678.72-169,299.37-74,958.38

Finding the Fourth Proportional to 122,678.72, 169,299.37 and 74,958.38

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Solution

The fourth proportional to 122,678.72, 169,299.37 and 74,958.38 is: 103,444.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,678.72 : 169,299.37 = 74,958.38 : x
  2. Step 2: Convert to fraction form
    122,678.72/169,299.37 = 74,958.38/x
  3. Step 3: Cross multiply
    122,678.72x = 169,299.37 × 74,958.38
  4. Step 4: Simplify right side
    122,678.72x = 12,690,405,970.65
  5. Step 5: Solve for x
    x = 12,690,405,970.65/122,678.72
  6. Step 6: Final answer
    x = 103,444.23

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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.