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Finding the Fourth Proportional to 154,054.80, 212,481.90 and 97,411.50

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Solution

The fourth proportional to 154,054.80, 212,481.90 and 97,411.50 is: 134,355.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,054.80 : 212,481.90 = 97,411.50 : x
  2. Step 2: Convert to fraction form
    154,054.80/212,481.90 = 97,411.50/x
  3. Step 3: Cross multiply
    154,054.80x = 212,481.90 × 97,411.50
  4. Step 4: Simplify right side
    154,054.80x = 20,698,180,601.85
  5. Step 5: Solve for x
    x = 20,698,180,601.85/154,054.80
  6. Step 6: Final answer
    x = 134,355.96

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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.