Home / 142,572.33-196,749.09-78,909.96

Finding the Fourth Proportional to 142,572.33, 196,749.09 and 78,909.96

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Solution

The fourth proportional to 142,572.33, 196,749.09 and 78,909.96 is: 108,895.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,572.33 : 196,749.09 = 78,909.96 : x
  2. Step 2: Convert to fraction form
    142,572.33/196,749.09 = 78,909.96/x
  3. Step 3: Cross multiply
    142,572.33x = 196,749.09 × 78,909.96
  4. Step 4: Simplify right side
    142,572.33x = 15,525,462,821.94
  5. Step 5: Solve for x
    x = 15,525,462,821.94/142,572.33
  6. Step 6: Final answer
    x = 108,895.34

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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.