Home / 117,002.75-161,523.54-81,130.50

Finding the Fourth Proportional to 117,002.75, 161,523.54 and 81,130.50

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Solution

The fourth proportional to 117,002.75, 161,523.54 and 81,130.50 is: 112,001.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,002.75 : 161,523.54 = 81,130.50 : x
  2. Step 2: Convert to fraction form
    117,002.75/161,523.54 = 81,130.50/x
  3. Step 3: Cross multiply
    117,002.75x = 161,523.54 × 81,130.50
  4. Step 4: Simplify right side
    117,002.75x = 13,104,485,561.97
  5. Step 5: Solve for x
    x = 13,104,485,561.97/117,002.75
  6. Step 6: Final answer
    x = 112,001.52

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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.