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Finding the Fourth Proportional to 105,966.80, 158,892.60 and 43,643.60

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Solution

The fourth proportional to 105,966.80, 158,892.60 and 43,643.60 is: 65,441.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,966.80 : 158,892.60 = 43,643.60 : x
  2. Step 2: Convert to fraction form
    105,966.80/158,892.60 = 43,643.60/x
  3. Step 3: Cross multiply
    105,966.80x = 158,892.60 × 43,643.60
  4. Step 4: Simplify right side
    105,966.80x = 6,934,645,077.36
  5. Step 5: Solve for x
    x = 6,934,645,077.36/105,966.80
  6. Step 6: Final answer
    x = 65,441.68

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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.