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Finding the Fourth Proportional to 158,999.76, 219,612.06 and 115,911

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Solution

The fourth proportional to 158,999.76, 219,612.06 and 115,911 is: 160,097.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,999.76 : 219,612.06 = 115,911 : x
  2. Step 2: Convert to fraction form
    158,999.76/219,612.06 = 115,911/x
  3. Step 3: Cross multiply
    158,999.76x = 219,612.06 × 115,911
  4. Step 4: Simplify right side
    158,999.76x = 25,455,453,486.66
  5. Step 5: Solve for x
    x = 25,455,453,486.66/158,999.76
  6. Step 6: Final answer
    x = 160,097.43

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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.