Home / 106,239.89-159,322.70-31,340.16

Finding the Fourth Proportional to 106,239.89, 159,322.70 and 31,340.16

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Solution

The fourth proportional to 106,239.89, 159,322.70 and 31,340.16 is: 46,999.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,239.89 : 159,322.70 = 31,340.16 : x
  2. Step 2: Convert to fraction form
    106,239.89/159,322.70 = 31,340.16/x
  3. Step 3: Cross multiply
    106,239.89x = 159,322.70 × 31,340.16
  4. Step 4: Simplify right side
    106,239.89x = 4,993,198,909.63
  5. Step 5: Solve for x
    x = 4,993,198,909.63/106,239.89
  6. Step 6: Final answer
    x = 46,999.29

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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.