Home / 117,619.85-162,313.40-63,905.72

Finding the Fourth Proportional to 117,619.85, 162,313.40 and 63,905.72

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Solution

The fourth proportional to 117,619.85, 162,313.40 and 63,905.72 is: 88,188.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,619.85 : 162,313.40 = 63,905.72 : x
  2. Step 2: Convert to fraction form
    117,619.85/162,313.40 = 63,905.72/x
  3. Step 3: Cross multiply
    117,619.85x = 162,313.40 × 63,905.72
  4. Step 4: Simplify right side
    117,619.85x = 10,372,754,040.85
  5. Step 5: Solve for x
    x = 10,372,754,040.85/117,619.85
  6. Step 6: Final answer
    x = 88,188.80

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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.