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Finding the Fourth Proportional to 105,804.72, 158,603.40 and 43,518.96

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Solution

The fourth proportional to 105,804.72, 158,603.40 and 43,518.96 is: 65,235.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,804.72 : 158,603.40 = 43,518.96 : x
  2. Step 2: Convert to fraction form
    105,804.72/158,603.40 = 43,518.96/x
  3. Step 3: Cross multiply
    105,804.72x = 158,603.40 × 43,518.96
  4. Step 4: Simplify right side
    105,804.72x = 6,902,255,020.46
  5. Step 5: Solve for x
    x = 6,902,255,020.46/105,804.72
  6. Step 6: Final answer
    x = 65,235.79

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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.