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Finding the Fourth Proportional to 105,356.08, 158,048.70 and 43,012

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Solution

The fourth proportional to 105,356.08, 158,048.70 and 43,012 is: 64,523.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,356.08 : 158,048.70 = 43,012 : x
  2. Step 2: Convert to fraction form
    105,356.08/158,048.70 = 43,012/x
  3. Step 3: Cross multiply
    105,356.08x = 158,048.70 × 43,012
  4. Step 4: Simplify right side
    105,356.08x = 6,797,990,684.40
  5. Step 5: Solve for x
    x = 6,797,990,684.40/105,356.08
  6. Step 6: Final answer
    x = 64,523.95

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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.