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Finding the Fourth Proportional to 101,675.70, 152,513.55 and 81,992.70

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Solution

The fourth proportional to 101,675.70, 152,513.55 and 81,992.70 is: 122,989.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,675.70 : 152,513.55 = 81,992.70 : x
  2. Step 2: Convert to fraction form
    101,675.70/152,513.55 = 81,992.70/x
  3. Step 3: Cross multiply
    101,675.70x = 152,513.55 × 81,992.70
  4. Step 4: Simplify right side
    101,675.70x = 12,504,997,751.09
  5. Step 5: Solve for x
    x = 12,504,997,751.09/101,675.70
  6. Step 6: Final answer
    x = 122,989.05

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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.