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Finding the Fourth Proportional to 103,695.80, 155,499.69 and 43,751.15

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Solution

The fourth proportional to 103,695.80, 155,499.69 and 43,751.15 is: 65,608.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,695.80 : 155,499.69 = 43,751.15 : x
  2. Step 2: Convert to fraction form
    103,695.80/155,499.69 = 43,751.15/x
  3. Step 3: Cross multiply
    103,695.80x = 155,499.69 × 43,751.15
  4. Step 4: Simplify right side
    103,695.80x = 6,803,290,262.14
  5. Step 5: Solve for x
    x = 6,803,290,262.14/103,695.80
  6. Step 6: Final answer
    x = 65,608.16

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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.