Home / 116,989.40-161,438.10-66,010.16

Finding the Fourth Proportional to 116,989.40, 161,438.10 and 66,010.16

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Solution

The fourth proportional to 116,989.40, 161,438.10 and 66,010.16 is: 91,089.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,989.40 : 161,438.10 = 66,010.16 : x
  2. Step 2: Convert to fraction form
    116,989.40/161,438.10 = 66,010.16/x
  3. Step 3: Cross multiply
    116,989.40x = 161,438.10 × 66,010.16
  4. Step 4: Simplify right side
    116,989.40x = 10,656,554,003.91
  5. Step 5: Solve for x
    x = 10,656,554,003.91/116,989.40
  6. Step 6: Final answer
    x = 91,089.91

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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.