Home / 129,769.28-179,047.71-76,025.40

Finding the Fourth Proportional to 129,769.28, 179,047.71 and 76,025.40

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Solution

The fourth proportional to 129,769.28, 179,047.71 and 76,025.40 is: 104,895.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,769.28 : 179,047.71 = 76,025.40 : x
  2. Step 2: Convert to fraction form
    129,769.28/179,047.71 = 76,025.40/x
  3. Step 3: Cross multiply
    129,769.28x = 179,047.71 × 76,025.40
  4. Step 4: Simplify right side
    129,769.28x = 13,612,173,771.83
  5. Step 5: Solve for x
    x = 13,612,173,771.83/129,769.28
  6. Step 6: Final answer
    x = 104,895.20

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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.