Home / 129,289.50-178,441.43-74,833.79

Finding the Fourth Proportional to 129,289.50, 178,441.43 and 74,833.79

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Solution

The fourth proportional to 129,289.50, 178,441.43 and 74,833.79 is: 103,283.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,289.50 : 178,441.43 = 74,833.79 : x
  2. Step 2: Convert to fraction form
    129,289.50/178,441.43 = 74,833.79/x
  3. Step 3: Cross multiply
    129,289.50x = 178,441.43 × 74,833.79
  4. Step 4: Simplify right side
    129,289.50x = 13,353,447,233.54
  5. Step 5: Solve for x
    x = 13,353,447,233.54/129,289.50
  6. Step 6: Final answer
    x = 103,283.31

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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.