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Finding the Fourth Proportional to 107,675.80, 161,448.90 and 55,187.80

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Solution

The fourth proportional to 107,675.80, 161,448.90 and 55,187.80 is: 82,748.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,675.80 : 161,448.90 = 55,187.80 : x
  2. Step 2: Convert to fraction form
    107,675.80/161,448.90 = 55,187.80/x
  3. Step 3: Cross multiply
    107,675.80x = 161,448.90 × 55,187.80
  4. Step 4: Simplify right side
    107,675.80x = 8,910,009,603.42
  5. Step 5: Solve for x
    x = 8,910,009,603.42/107,675.80
  6. Step 6: Final answer
    x = 82,748.49

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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.