Home / 142,591.92-196,756.23-78,929.58

Finding the Fourth Proportional to 142,591.92, 196,756.23 and 78,929.58

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Solution

The fourth proportional to 142,591.92, 196,756.23 and 78,929.58 is: 108,911.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,591.92 : 196,756.23 = 78,929.58 : x
  2. Step 2: Convert to fraction form
    142,591.92/196,756.23 = 78,929.58/x
  3. Step 3: Cross multiply
    142,591.92x = 196,756.23 × 78,929.58
  4. Step 4: Simplify right side
    142,591.92x = 15,529,886,596.28
  5. Step 5: Solve for x
    x = 15,529,886,596.28/142,591.92
  6. Step 6: Final answer
    x = 108,911.41

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1.5x scale

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.