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Finding the Fourth Proportional to 128,633.58, 177,536.31 and 74,950.41

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Solution

The fourth proportional to 128,633.58, 177,536.31 and 74,950.41 is: 103,444.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,633.58 : 177,536.31 = 74,950.41 : x
  2. Step 2: Convert to fraction form
    128,633.58/177,536.31 = 74,950.41/x
  3. Step 3: Cross multiply
    128,633.58x = 177,536.31 × 74,950.41
  4. Step 4: Simplify right side
    128,633.58x = 13,306,419,224.39
  5. Step 5: Solve for x
    x = 13,306,419,224.39/128,633.58
  6. Step 6: Final answer
    x = 103,444.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.