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Finding the Fourth Proportional to 105,768.80, 158,595.60 and 43,368.80

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Solution

The fourth proportional to 105,768.80, 158,595.60 and 43,368.80 is: 65,029.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,768.80 : 158,595.60 = 43,368.80 : x
  2. Step 2: Convert to fraction form
    105,768.80/158,595.60 = 43,368.80/x
  3. Step 3: Cross multiply
    105,768.80x = 158,595.60 × 43,368.80
  4. Step 4: Simplify right side
    105,768.80x = 6,878,100,857.28
  5. Step 5: Solve for x
    x = 6,878,100,857.28/105,768.80
  6. Step 6: Final answer
    x = 65,029.58

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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.