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Finding the Fourth Proportional to 92,129.77, 127,208.37 and 90,658.44

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Solution

The fourth proportional to 92,129.77, 127,208.37 and 90,658.44 is: 125,176.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,129.77 : 127,208.37 = 90,658.44 : x
  2. Step 2: Convert to fraction form
    92,129.77/127,208.37 = 90,658.44/x
  3. Step 3: Cross multiply
    92,129.77x = 127,208.37 × 90,658.44
  4. Step 4: Simplify right side
    92,129.77x = 11,532,512,379.14
  5. Step 5: Solve for x
    x = 11,532,512,379.14/92,129.77
  6. Step 6: Final answer
    x = 125,176.83

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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.