Home / 102,905.68-142,005.96-58,194.64

Finding the Fourth Proportional to 102,905.68, 142,005.96 and 58,194.64

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Solution

The fourth proportional to 102,905.68, 142,005.96 and 58,194.64 is: 80,306.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,905.68 : 142,005.96 = 58,194.64 : x
  2. Step 2: Convert to fraction form
    102,905.68/142,005.96 = 58,194.64/x
  3. Step 3: Cross multiply
    102,905.68x = 142,005.96 × 58,194.64
  4. Step 4: Simplify right side
    102,905.68x = 8,263,985,720.05
  5. Step 5: Solve for x
    x = 8,263,985,720.05/102,905.68
  6. Step 6: Final answer
    x = 80,306.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.