Home / 142,211.76-213,379.87-67,385.31

Finding the Fourth Proportional to 142,211.76, 213,379.87 and 67,385.31

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Solution

The fourth proportional to 142,211.76, 213,379.87 and 67,385.31 is: 101,107.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,211.76 : 213,379.87 = 67,385.31 : x
  2. Step 2: Convert to fraction form
    142,211.76/213,379.87 = 67,385.31/x
  3. Step 3: Cross multiply
    142,211.76x = 213,379.87 × 67,385.31
  4. Step 4: Simplify right side
    142,211.76x = 14,378,668,687.71
  5. Step 5: Solve for x
    x = 14,378,668,687.71/142,211.76
  6. Step 6: Final answer
    x = 101,107.45

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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.