Home / 130,943.86-196,501.92-71,821

Finding the Fourth Proportional to 130,943.86, 196,501.92 and 71,821

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Solution

The fourth proportional to 130,943.86, 196,501.92 and 71,821 is: 107,778.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,943.86 : 196,501.92 = 71,821 : x
  2. Step 2: Convert to fraction form
    130,943.86/196,501.92 = 71,821/x
  3. Step 3: Cross multiply
    130,943.86x = 196,501.92 × 71,821
  4. Step 4: Simplify right side
    130,943.86x = 14,112,964,396.32
  5. Step 5: Solve for x
    x = 14,112,964,396.32/130,943.86
  6. Step 6: Final answer
    x = 107,778.74

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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.