Home / 117,689.75-162,412.05-63,974.60

Finding the Fourth Proportional to 117,689.75, 162,412.05 and 63,974.60

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Solution

The fourth proportional to 117,689.75, 162,412.05 and 63,974.60 is: 88,285.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,689.75 : 162,412.05 = 63,974.60 : x
  2. Step 2: Convert to fraction form
    117,689.75/162,412.05 = 63,974.60/x
  3. Step 3: Cross multiply
    117,689.75x = 162,412.05 × 63,974.60
  4. Step 4: Simplify right side
    117,689.75x = 10,390,245,933.93
  5. Step 5: Solve for x
    x = 10,390,245,933.93/117,689.75
  6. Step 6: Final answer
    x = 88,285.05

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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.