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Finding the Fourth Proportional to 105,536.80, 158,247.60 and 43,136.80

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Solution

The fourth proportional to 105,536.80, 158,247.60 and 43,136.80 is: 64,681.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,536.80 : 158,247.60 = 43,136.80 : x
  2. Step 2: Convert to fraction form
    105,536.80/158,247.60 = 43,136.80/x
  3. Step 3: Cross multiply
    105,536.80x = 158,247.60 × 43,136.80
  4. Step 4: Simplify right side
    105,536.80x = 6,826,295,071.68
  5. Step 5: Solve for x
    x = 6,826,295,071.68/105,536.80
  6. Step 6: Final answer
    x = 64,681.66

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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.