Home / 126,378.40-174,401.12-69,788.56

Finding the Fourth Proportional to 126,378.40, 174,401.12 and 69,788.56

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Solution

The fourth proportional to 126,378.40, 174,401.12 and 69,788.56 is: 96,307.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,378.40 : 174,401.12 = 69,788.56 : x
  2. Step 2: Convert to fraction form
    126,378.40/174,401.12 = 69,788.56/x
  3. Step 3: Cross multiply
    126,378.40x = 174,401.12 × 69,788.56
  4. Step 4: Simplify right side
    126,378.40x = 12,171,203,027.19
  5. Step 5: Solve for x
    x = 12,171,203,027.19/126,378.40
  6. Step 6: Final answer
    x = 96,307.62

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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.