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Finding the Fourth Proportional to 153,455.88, 211,826.70 and 113,491.29

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Solution

The fourth proportional to 153,455.88, 211,826.70 and 113,491.29 is: 156,660.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,455.88 : 211,826.70 = 113,491.29 : x
  2. Step 2: Convert to fraction form
    153,455.88/211,826.70 = 113,491.29/x
  3. Step 3: Cross multiply
    153,455.88x = 211,826.70 × 113,491.29
  4. Step 4: Simplify right side
    153,455.88x = 24,040,485,439.44
  5. Step 5: Solve for x
    x = 24,040,485,439.44/153,455.88
  6. Step 6: Final answer
    x = 156,660.57

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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.