Home / 117,390.42-176,083.89-81,333.60

Finding the Fourth Proportional to 117,390.42, 176,083.89 and 81,333.60

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Solution

The fourth proportional to 117,390.42, 176,083.89 and 81,333.60 is: 121,999.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,390.42 : 176,083.89 = 81,333.60 : x
  2. Step 2: Convert to fraction form
    117,390.42/176,083.89 = 81,333.60/x
  3. Step 3: Cross multiply
    117,390.42x = 176,083.89 × 81,333.60
  4. Step 4: Simplify right side
    117,390.42x = 14,321,536,675.70
  5. Step 5: Solve for x
    x = 14,321,536,675.70/117,390.42
  6. Step 6: Final answer
    x = 121,999.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.