Home / 117,485.30-162,214-72,223.98

Finding the Fourth Proportional to 117,485.30, 162,214 and 72,223.98

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Solution

The fourth proportional to 117,485.30, 162,214 and 72,223.98 is: 99,720.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,485.30 : 162,214 = 72,223.98 : x
  2. Step 2: Convert to fraction form
    117,485.30/162,214 = 72,223.98/x
  3. Step 3: Cross multiply
    117,485.30x = 162,214 × 72,223.98
  4. Step 4: Simplify right side
    117,485.30x = 11,715,740,691.72
  5. Step 5: Solve for x
    x = 11,715,740,691.72/117,485.30
  6. Step 6: Final answer
    x = 99,720.91

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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.