Home / 143,215.20-214,495.56-68,387.76

Finding the Fourth Proportional to 143,215.20, 214,495.56 and 68,387.76

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Solution

The fourth proportional to 143,215.20, 214,495.56 and 68,387.76 is: 102,425.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,215.20 : 214,495.56 = 68,387.76 : x
  2. Step 2: Convert to fraction form
    143,215.20/214,495.56 = 68,387.76/x
  3. Step 3: Cross multiply
    143,215.20x = 214,495.56 × 68,387.76
  4. Step 4: Simplify right side
    143,215.20x = 14,668,870,878.35
  5. Step 5: Solve for x
    x = 14,668,870,878.35/143,215.20
  6. Step 6: Final answer
    x = 102,425.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.