Home / 105,974.08-158,985.74-31,091.20

Finding the Fourth Proportional to 105,974.08, 158,985.74 and 31,091.20

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Solution

The fourth proportional to 105,974.08, 158,985.74 and 31,091.20 is: 46,644.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,974.08 : 158,985.74 = 31,091.20 : x
  2. Step 2: Convert to fraction form
    105,974.08/158,985.74 = 31,091.20/x
  3. Step 3: Cross multiply
    105,974.08x = 158,985.74 × 31,091.20
  4. Step 4: Simplify right side
    105,974.08x = 4,943,057,439.49
  5. Step 5: Solve for x
    x = 4,943,057,439.49/105,974.08
  6. Step 6: Final answer
    x = 46,644.02

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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.