Home / 142,558.40-196,751.40-82,117.28

Finding the Fourth Proportional to 142,558.40, 196,751.40 and 82,117.28

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Solution

The fourth proportional to 142,558.40, 196,751.40 and 82,117.28 is: 113,333.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,558.40 : 196,751.40 = 82,117.28 : x
  2. Step 2: Convert to fraction form
    142,558.40/196,751.40 = 82,117.28/x
  3. Step 3: Cross multiply
    142,558.40x = 196,751.40 × 82,117.28
  4. Step 4: Simplify right side
    142,558.40x = 16,156,689,804.19
  5. Step 5: Solve for x
    x = 16,156,689,804.19/142,558.40
  6. Step 6: Final answer
    x = 113,333.83

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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.