Home / 116,981.36-161,430-66,670.64

Finding the Fourth Proportional to 116,981.36, 161,430 and 66,670.64

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Solution

The fourth proportional to 116,981.36, 161,430 and 66,670.64 is: 92,003.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,981.36 : 161,430 = 66,670.64 : x
  2. Step 2: Convert to fraction form
    116,981.36/161,430 = 66,670.64/x
  3. Step 3: Cross multiply
    116,981.36x = 161,430 × 66,670.64
  4. Step 4: Simplify right side
    116,981.36x = 10,762,641,415.20
  5. Step 5: Solve for x
    x = 10,762,641,415.20/116,981.36
  6. Step 6: Final answer
    x = 92,003.05

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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.