Home / 99,026.55-148,185-85,745.39

Finding the Fourth Proportional to 99,026.55, 148,185 and 85,745.39

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Solution

The fourth proportional to 99,026.55, 148,185 and 85,745.39 is: 128,310.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,026.55 : 148,185 = 85,745.39 : x
  2. Step 2: Convert to fraction form
    99,026.55/148,185 = 85,745.39/x
  3. Step 3: Cross multiply
    99,026.55x = 148,185 × 85,745.39
  4. Step 4: Simplify right side
    99,026.55x = 12,706,179,876.23
  5. Step 5: Solve for x
    x = 12,706,179,876.23/99,026.55
  6. Step 6: Final answer
    x = 128,310.84

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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.