Home / 116,720.40-161,072.04-65,732.94

Finding the Fourth Proportional to 116,720.40, 161,072.04 and 65,732.94

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Solution

The fourth proportional to 116,720.40, 161,072.04 and 65,732.94 is: 90,710.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,720.40 : 161,072.04 = 65,732.94 : x
  2. Step 2: Convert to fraction form
    116,720.40/161,072.04 = 65,732.94/x
  3. Step 3: Cross multiply
    116,720.40x = 161,072.04 × 65,732.94
  4. Step 4: Simplify right side
    116,720.40x = 10,587,738,741.00
  5. Step 5: Solve for x
    x = 10,587,738,741.00/116,720.40
  6. Step 6: Final answer
    x = 90,710.27

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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.