Home / 142,292.07-196,356.68-78,628.50

Finding the Fourth Proportional to 142,292.07, 196,356.68 and 78,628.50

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Solution

The fourth proportional to 142,292.07, 196,356.68 and 78,628.50 is: 108,503.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,292.07 : 196,356.68 = 78,628.50 : x
  2. Step 2: Convert to fraction form
    142,292.07/196,356.68 = 78,628.50/x
  3. Step 3: Cross multiply
    142,292.07x = 196,356.68 × 78,628.50
  4. Step 4: Simplify right side
    142,292.07x = 15,439,231,213.38
  5. Step 5: Solve for x
    x = 15,439,231,213.38/142,292.07
  6. Step 6: Final answer
    x = 108,503.81

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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.