Home / 142,650.14-196,854.79-78,986.57

Finding the Fourth Proportional to 142,650.14, 196,854.79 and 78,986.57

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Solution

The fourth proportional to 142,650.14, 196,854.79 and 78,986.57 is: 109,000.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,650.14 : 196,854.79 = 78,986.57 : x
  2. Step 2: Convert to fraction form
    142,650.14/196,854.79 = 78,986.57/x
  3. Step 3: Cross multiply
    142,650.14x = 196,854.79 × 78,986.57
  4. Step 4: Simplify right side
    142,650.14x = 15,548,884,650.17
  5. Step 5: Solve for x
    x = 15,548,884,650.17/142,650.14
  6. Step 6: Final answer
    x = 109,000.14

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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.