Home / 117,890.85-162,701.78-103,220.64

Finding the Fourth Proportional to 117,890.85, 162,701.78 and 103,220.64

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Solution

The fourth proportional to 117,890.85, 162,701.78 and 103,220.64 is: 142,455.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,890.85 : 162,701.78 = 103,220.64 : x
  2. Step 2: Convert to fraction form
    117,890.85/162,701.78 = 103,220.64/x
  3. Step 3: Cross multiply
    117,890.85x = 162,701.78 × 103,220.64
  4. Step 4: Simplify right side
    117,890.85x = 16,794,181,047.23
  5. Step 5: Solve for x
    x = 16,794,181,047.23/117,890.85
  6. Step 6: Final answer
    x = 142,455.34

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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.