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Finding the Fourth Proportional to 151,607.98, 209,220 and 83,626.78

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Solution

The fourth proportional to 151,607.98, 209,220 and 83,626.78 is: 115,405.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,607.98 : 209,220 = 83,626.78 : x
  2. Step 2: Convert to fraction form
    151,607.98/209,220 = 83,626.78/x
  3. Step 3: Cross multiply
    151,607.98x = 209,220 × 83,626.78
  4. Step 4: Simplify right side
    151,607.98x = 17,496,394,911.60
  5. Step 5: Solve for x
    x = 17,496,394,911.60/151,607.98
  6. Step 6: Final answer
    x = 115,405.50

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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.