Home / 129,642.33-178,950.69-75,944.46

Finding the Fourth Proportional to 129,642.33, 178,950.69 and 75,944.46

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Solution

The fourth proportional to 129,642.33, 178,950.69 and 75,944.46 is: 104,829.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,642.33 : 178,950.69 = 75,944.46 : x
  2. Step 2: Convert to fraction form
    129,642.33/178,950.69 = 75,944.46/x
  3. Step 3: Cross multiply
    129,642.33x = 178,950.69 × 75,944.46
  4. Step 4: Simplify right side
    129,642.33x = 13,590,313,518.68
  5. Step 5: Solve for x
    x = 13,590,313,518.68/129,642.33
  6. Step 6: Final answer
    x = 104,829.29

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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.