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Finding the Fourth Proportional to 158,907.94, 219,324.26 and 90,009.74

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Solution

The fourth proportional to 158,907.94, 219,324.26 and 90,009.74 is: 124,231.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,907.94 : 219,324.26 = 90,009.74 : x
  2. Step 2: Convert to fraction form
    158,907.94/219,324.26 = 90,009.74/x
  3. Step 3: Cross multiply
    158,907.94x = 219,324.26 × 90,009.74
  4. Step 4: Simplify right side
    158,907.94x = 19,741,319,618.29
  5. Step 5: Solve for x
    x = 19,741,319,618.29/158,907.94
  6. Step 6: Final answer
    x = 124,231.17

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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.