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Finding the Fourth Proportional to 170,099.82, 255,307.34 and 85,918.98

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Solution

The fourth proportional to 170,099.82, 255,307.34 and 85,918.98 is: 128,958.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,099.82 : 255,307.34 = 85,918.98 : x
  2. Step 2: Convert to fraction form
    170,099.82/255,307.34 = 85,918.98/x
  3. Step 3: Cross multiply
    170,099.82x = 255,307.34 × 85,918.98
  4. Step 4: Simplify right side
    170,099.82x = 21,935,747,092.38
  5. Step 5: Solve for x
    x = 21,935,747,092.38/170,099.82
  6. Step 6: Final answer
    x = 128,958.09

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1.5x scale

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.