Home / 165,474.39-248,038.77-81,117.75

Finding the Fourth Proportional to 165,474.39, 248,038.77 and 81,117.75

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Solution

The fourth proportional to 165,474.39, 248,038.77 and 81,117.75 is: 121,591.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,474.39 : 248,038.77 = 81,117.75 : x
  2. Step 2: Convert to fraction form
    165,474.39/248,038.77 = 81,117.75/x
  3. Step 3: Cross multiply
    165,474.39x = 248,038.77 × 81,117.75
  4. Step 4: Simplify right side
    165,474.39x = 20,120,346,935.17
  5. Step 5: Solve for x
    x = 20,120,346,935.17/165,474.39
  6. Step 6: Final answer
    x = 121,591.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.