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Finding the Fourth Proportional to 158,112.36, 218,245.86 and 104,445

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Solution

The fourth proportional to 158,112.36, 218,245.86 and 104,445 is: 144,167.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,112.36 : 218,245.86 = 104,445 : x
  2. Step 2: Convert to fraction form
    158,112.36/218,245.86 = 104,445/x
  3. Step 3: Cross multiply
    158,112.36x = 218,245.86 × 104,445
  4. Step 4: Simplify right side
    158,112.36x = 22,794,688,847.70
  5. Step 5: Solve for x
    x = 22,794,688,847.70/158,112.36
  6. Step 6: Final answer
    x = 144,167.66

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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.