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Finding the Fourth Proportional to 91,498.94, 136,625.60 and 80,735.60

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Solution

The fourth proportional to 91,498.94, 136,625.60 and 80,735.60 is: 120,553.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,498.94 : 136,625.60 = 80,735.60 : x
  2. Step 2: Convert to fraction form
    91,498.94/136,625.60 = 80,735.60/x
  3. Step 3: Cross multiply
    91,498.94x = 136,625.60 × 80,735.60
  4. Step 4: Simplify right side
    91,498.94x = 11,030,549,488.60
  5. Step 5: Solve for x
    x = 11,030,549,488.60/91,498.94
  6. Step 6: Final answer
    x = 120,553.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.