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Finding the Fourth Proportional to 145,122.09, 217,745.10 and 60,903.15

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Solution

The fourth proportional to 145,122.09, 217,745.10 and 60,903.15 is: 91,380.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,122.09 : 217,745.10 = 60,903.15 : x
  2. Step 2: Convert to fraction form
    145,122.09/217,745.10 = 60,903.15/x
  3. Step 3: Cross multiply
    145,122.09x = 217,745.10 × 60,903.15
  4. Step 4: Simplify right side
    145,122.09x = 13,261,362,487.07
  5. Step 5: Solve for x
    x = 13,261,362,487.07/145,122.09
  6. Step 6: Final answer
    x = 91,380.73

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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.