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Finding the Fourth Proportional to 141,466.72, 212,200.08 and 66,540.28

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Solution

The fourth proportional to 141,466.72, 212,200.08 and 66,540.28 is: 99,810.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,466.72 : 212,200.08 = 66,540.28 : x
  2. Step 2: Convert to fraction form
    141,466.72/212,200.08 = 66,540.28/x
  3. Step 3: Cross multiply
    141,466.72x = 212,200.08 × 66,540.28
  4. Step 4: Simplify right side
    141,466.72x = 14,119,852,739.22
  5. Step 5: Solve for x
    x = 14,119,852,739.22/141,466.72
  6. Step 6: Final answer
    x = 99,810.42

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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.