Home / 117,473.76-161,890.32-115,314.72

Finding the Fourth Proportional to 117,473.76, 161,890.32 and 115,314.72

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Solution

The fourth proportional to 117,473.76, 161,890.32 and 115,314.72 is: 158,914.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,473.76 : 161,890.32 = 115,314.72 : x
  2. Step 2: Convert to fraction form
    117,473.76/161,890.32 = 115,314.72/x
  3. Step 3: Cross multiply
    117,473.76x = 161,890.32 × 115,314.72
  4. Step 4: Simplify right side
    117,473.76x = 18,668,336,921.51
  5. Step 5: Solve for x
    x = 18,668,336,921.51/117,473.76
  6. Step 6: Final answer
    x = 158,914.95

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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.