Home / 128,973.56-178,066.50-88,674.44

Finding the Fourth Proportional to 128,973.56, 178,066.50 and 88,674.44

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Solution

The fourth proportional to 128,973.56, 178,066.50 and 88,674.44 is: 122,427.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,973.56 : 178,066.50 = 88,674.44 : x
  2. Step 2: Convert to fraction form
    128,973.56/178,066.50 = 88,674.44/x
  3. Step 3: Cross multiply
    128,973.56x = 178,066.50 × 88,674.44
  4. Step 4: Simplify right side
    128,973.56x = 15,789,947,170.26
  5. Step 5: Solve for x
    x = 15,789,947,170.26/128,973.56
  6. Step 6: Final answer
    x = 122,427.78

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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.