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Finding the Fourth Proportional to 169,938.78, 254,558.16 and 99,648.60

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Solution

The fourth proportional to 169,938.78, 254,558.16 and 99,648.60 is: 149,267.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,938.78 : 254,558.16 = 99,648.60 : x
  2. Step 2: Convert to fraction form
    169,938.78/254,558.16 = 99,648.60/x
  3. Step 3: Cross multiply
    169,938.78x = 254,558.16 × 99,648.60
  4. Step 4: Simplify right side
    169,938.78x = 25,366,364,262.58
  5. Step 5: Solve for x
    x = 25,366,364,262.58/169,938.78
  6. Step 6: Final answer
    x = 149,267.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.