Home / 126,428.30-174,470.50-69,839.67

Finding the Fourth Proportional to 126,428.30, 174,470.50 and 69,839.67

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Solution

The fourth proportional to 126,428.30, 174,470.50 and 69,839.67 is: 96,378.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,428.30 : 174,470.50 = 69,839.67 : x
  2. Step 2: Convert to fraction form
    126,428.30/174,470.50 = 69,839.67/x
  3. Step 3: Cross multiply
    126,428.30x = 174,470.50 × 69,839.67
  4. Step 4: Simplify right side
    126,428.30x = 12,184,962,144.74
  5. Step 5: Solve for x
    x = 12,184,962,144.74/126,428.30
  6. Step 6: Final answer
    x = 96,378.44

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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.