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Finding the Fourth Proportional to 158,998, 219,423 and 91,027.12

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Solution

The fourth proportional to 158,998, 219,423 and 91,027.12 is: 125,620.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,998 : 219,423 = 91,027.12 : x
  2. Step 2: Convert to fraction form
    158,998/219,423 = 91,027.12/x
  3. Step 3: Cross multiply
    158,998x = 219,423 × 91,027.12
  4. Step 4: Simplify right side
    158,998x = 19,973,443,751.76
  5. Step 5: Solve for x
    x = 19,973,443,751.76/158,998
  6. Step 6: Final answer
    x = 125,620.72

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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.