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Finding the Fourth Proportional to 115,893.70, 173,840.55 and 100,687.30

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Solution

The fourth proportional to 115,893.70, 173,840.55 and 100,687.30 is: 151,030.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,893.70 : 173,840.55 = 100,687.30 : x
  2. Step 2: Convert to fraction form
    115,893.70/173,840.55 = 100,687.30/x
  3. Step 3: Cross multiply
    115,893.70x = 173,840.55 × 100,687.30
  4. Step 4: Simplify right side
    115,893.70x = 17,503,535,610.02
  5. Step 5: Solve for x
    x = 17,503,535,610.02/115,893.70
  6. Step 6: Final answer
    x = 151,030.95

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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.