Home / 117,056.89-161,539.85-66,072.45

Finding the Fourth Proportional to 117,056.89, 161,539.85 and 66,072.45

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Solution

The fourth proportional to 117,056.89, 161,539.85 and 66,072.45 is: 91,180.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,056.89 : 161,539.85 = 66,072.45 : x
  2. Step 2: Convert to fraction form
    117,056.89/161,539.85 = 66,072.45/x
  3. Step 3: Cross multiply
    117,056.89x = 161,539.85 × 66,072.45
  4. Step 4: Simplify right side
    117,056.89x = 10,673,333,331.77
  5. Step 5: Solve for x
    x = 10,673,333,331.77/117,056.89
  6. Step 6: Final answer
    x = 91,180.74

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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.