Home / 117,116.36-161,468.08-74,659.40

Finding the Fourth Proportional to 117,116.36, 161,468.08 and 74,659.40

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Solution

The fourth proportional to 117,116.36, 161,468.08 and 74,659.40 is: 102,932.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,116.36 : 161,468.08 = 74,659.40 : x
  2. Step 2: Convert to fraction form
    117,116.36/161,468.08 = 74,659.40/x
  3. Step 3: Cross multiply
    117,116.36x = 161,468.08 × 74,659.40
  4. Step 4: Simplify right side
    117,116.36x = 12,055,109,971.95
  5. Step 5: Solve for x
    x = 12,055,109,971.95/117,116.36
  6. Step 6: Final answer
    x = 102,932.76

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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.