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Finding the Fourth Proportional to 123,750.51, 170,775.71 and 67,161.89

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Solution

The fourth proportional to 123,750.51, 170,775.71 and 67,161.89 is: 92,683.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,750.51 : 170,775.71 = 67,161.89 : x
  2. Step 2: Convert to fraction form
    123,750.51/170,775.71 = 67,161.89/x
  3. Step 3: Cross multiply
    123,750.51x = 170,775.71 × 67,161.89
  4. Step 4: Simplify right side
    123,750.51x = 11,469,618,260.00
  5. Step 5: Solve for x
    x = 11,469,618,260.00/123,750.51
  6. Step 6: Final answer
    x = 92,683.40

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1.5x scale

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.