Home / 129,675.44-178,996.75-75,977.84

Finding the Fourth Proportional to 129,675.44, 178,996.75 and 75,977.84

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Solution

The fourth proportional to 129,675.44, 178,996.75 and 75,977.84 is: 104,875.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,675.44 : 178,996.75 = 75,977.84 : x
  2. Step 2: Convert to fraction form
    129,675.44/178,996.75 = 75,977.84/x
  3. Step 3: Cross multiply
    129,675.44x = 178,996.75 × 75,977.84
  4. Step 4: Simplify right side
    129,675.44x = 13,599,785,347.09
  5. Step 5: Solve for x
    x = 13,599,785,347.09/129,675.44
  6. Step 6: Final answer
    x = 104,875.57

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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.