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Finding the Fourth Proportional to 159,177.81, 219,696.57 and 91,240.32

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Solution

The fourth proportional to 159,177.81, 219,696.57 and 91,240.32 is: 125,929.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,177.81 : 219,696.57 = 91,240.32 : x
  2. Step 2: Convert to fraction form
    159,177.81/219,696.57 = 91,240.32/x
  3. Step 3: Cross multiply
    159,177.81x = 219,696.57 × 91,240.32
  4. Step 4: Simplify right side
    159,177.81x = 20,045,185,349.70
  5. Step 5: Solve for x
    x = 20,045,185,349.70/159,177.81
  6. Step 6: Final answer
    x = 125,929.52

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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.