Home / 142,720.40-196,554.66-139,620.94

Finding the Fourth Proportional to 142,720.40, 196,554.66 and 139,620.94

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Solution

The fourth proportional to 142,720.40, 196,554.66 and 139,620.94 is: 192,286.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,720.40 : 196,554.66 = 139,620.94 : x
  2. Step 2: Convert to fraction form
    142,720.40/196,554.66 = 139,620.94/x
  3. Step 3: Cross multiply
    142,720.40x = 196,554.66 × 139,620.94
  4. Step 4: Simplify right side
    142,720.40x = 27,443,146,390.58
  5. Step 5: Solve for x
    x = 27,443,146,390.58/142,720.40
  6. Step 6: Final answer
    x = 192,286.08

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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.