Home / 142,299.08-196,366.32-78,635.52

Finding the Fourth Proportional to 142,299.08, 196,366.32 and 78,635.52

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Solution

The fourth proportional to 142,299.08, 196,366.32 and 78,635.52 is: 108,513.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,299.08 : 196,366.32 = 78,635.52 : x
  2. Step 2: Convert to fraction form
    142,299.08/196,366.32 = 78,635.52/x
  3. Step 3: Cross multiply
    142,299.08x = 196,366.32 × 78,635.52
  4. Step 4: Simplify right side
    142,299.08x = 15,441,367,683.69
  5. Step 5: Solve for x
    x = 15,441,367,683.69/142,299.08
  6. Step 6: Final answer
    x = 108,513.48

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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.