Home / 142,433.36-196,550.03-77,889.78

Finding the Fourth Proportional to 142,433.36, 196,550.03 and 77,889.78

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Solution

The fourth proportional to 142,433.36, 196,550.03 and 77,889.78 is: 107,483.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,433.36 : 196,550.03 = 77,889.78 : x
  2. Step 2: Convert to fraction form
    142,433.36/196,550.03 = 77,889.78/x
  3. Step 3: Cross multiply
    142,433.36x = 196,550.03 × 77,889.78
  4. Step 4: Simplify right side
    142,433.36x = 15,309,238,206.24
  5. Step 5: Solve for x
    x = 15,309,238,206.24/142,433.36
  6. Step 6: Final answer
    x = 107,483.52

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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.