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Finding the Fourth Proportional to 105,983.60, 158,975.40 and 104,428.40

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Solution

The fourth proportional to 105,983.60, 158,975.40 and 104,428.40 is: 156,642.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,983.60 : 158,975.40 = 104,428.40 : x
  2. Step 2: Convert to fraction form
    105,983.60/158,975.40 = 104,428.40/x
  3. Step 3: Cross multiply
    105,983.60x = 158,975.40 × 104,428.40
  4. Step 4: Simplify right side
    105,983.60x = 16,601,546,661.36
  5. Step 5: Solve for x
    x = 16,601,546,661.36/105,983.60
  6. Step 6: Final answer
    x = 156,642.60

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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.