Home / 128,635.58-177,539.07-74,952.41

Finding the Fourth Proportional to 128,635.58, 177,539.07 and 74,952.41

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Solution

The fourth proportional to 128,635.58, 177,539.07 and 74,952.41 is: 103,447.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,635.58 : 177,539.07 = 74,952.41 : x
  2. Step 2: Convert to fraction form
    128,635.58/177,539.07 = 74,952.41/x
  3. Step 3: Cross multiply
    128,635.58x = 177,539.07 × 74,952.41
  4. Step 4: Simplify right side
    128,635.58x = 13,306,981,165.66
  5. Step 5: Solve for x
    x = 13,306,981,165.66/128,635.58
  6. Step 6: Final answer
    x = 103,447.13

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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.