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Finding the Fourth Proportional to 124,427.28, 171,704.52 and 69,977.88

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Solution

The fourth proportional to 124,427.28, 171,704.52 and 69,977.88 is: 96,566.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,427.28 : 171,704.52 = 69,977.88 : x
  2. Step 2: Convert to fraction form
    124,427.28/171,704.52 = 69,977.88/x
  3. Step 3: Cross multiply
    124,427.28x = 171,704.52 × 69,977.88
  4. Step 4: Simplify right side
    124,427.28x = 12,015,518,296.02
  5. Step 5: Solve for x
    x = 12,015,518,296.02/124,427.28
  6. Step 6: Final answer
    x = 96,566.59

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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.