Home / 128,511.44-177,359.04-74,065.52

Finding the Fourth Proportional to 128,511.44, 177,359.04 and 74,065.52

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Solution

The fourth proportional to 128,511.44, 177,359.04 and 74,065.52 is: 102,218.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,511.44 : 177,359.04 = 74,065.52 : x
  2. Step 2: Convert to fraction form
    128,511.44/177,359.04 = 74,065.52/x
  3. Step 3: Cross multiply
    128,511.44x = 177,359.04 × 74,065.52
  4. Step 4: Simplify right side
    128,511.44x = 13,136,189,524.30
  5. Step 5: Solve for x
    x = 13,136,189,524.30/128,511.44
  6. Step 6: Final answer
    x = 102,218.06

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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.