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Finding the Fourth Proportional to 170,559.72, 255,950.28 and 77,066.28

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Solution

The fourth proportional to 170,559.72, 255,950.28 and 77,066.28 is: 115,649.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,559.72 : 255,950.28 = 77,066.28 : x
  2. Step 2: Convert to fraction form
    170,559.72/255,950.28 = 77,066.28/x
  3. Step 3: Cross multiply
    170,559.72x = 255,950.28 × 77,066.28
  4. Step 4: Simplify right side
    170,559.72x = 19,725,135,944.56
  5. Step 5: Solve for x
    x = 19,725,135,944.56/170,559.72
  6. Step 6: Final answer
    x = 115,649.44

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.