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Finding the Fourth Proportional to 189,466.80, 284,148.36 and 71,129.04

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Solution

The fourth proportional to 189,466.80, 284,148.36 and 71,129.04 is: 106,674.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,466.80 : 284,148.36 = 71,129.04 : x
  2. Step 2: Convert to fraction form
    189,466.80/284,148.36 = 71,129.04/x
  3. Step 3: Cross multiply
    189,466.80x = 284,148.36 × 71,129.04
  4. Step 4: Simplify right side
    189,466.80x = 20,211,200,064.37
  5. Step 5: Solve for x
    x = 20,211,200,064.37/189,466.80
  6. Step 6: Final answer
    x = 106,674.10

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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.