Home / 117,477.76-161,895.84-115,318.72

Finding the Fourth Proportional to 117,477.76, 161,895.84 and 115,318.72

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Solution

The fourth proportional to 117,477.76, 161,895.84 and 115,318.72 is: 158,920.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,477.76 : 161,895.84 = 115,318.72 : x
  2. Step 2: Convert to fraction form
    117,477.76/161,895.84 = 115,318.72/x
  3. Step 3: Cross multiply
    117,477.76x = 161,895.84 × 115,318.72
  4. Step 4: Simplify right side
    117,477.76x = 18,669,621,042.12
  5. Step 5: Solve for x
    x = 18,669,621,042.12/117,477.76
  6. Step 6: Final answer
    x = 158,920.47

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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.