Home / 190,077.66-262,068.72-121,974.48

Finding the Fourth Proportional to 190,077.66, 262,068.72 and 121,974.48

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Solution

The fourth proportional to 190,077.66, 262,068.72 and 121,974.48 is: 168,171.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,077.66 : 262,068.72 = 121,974.48 : x
  2. Step 2: Convert to fraction form
    190,077.66/262,068.72 = 121,974.48/x
  3. Step 3: Cross multiply
    190,077.66x = 262,068.72 × 121,974.48
  4. Step 4: Simplify right side
    190,077.66x = 31,965,695,846.27
  5. Step 5: Solve for x
    x = 31,965,695,846.27/190,077.66
  6. Step 6: Final answer
    x = 168,171.77

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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.