Home / 142,662.87-196,880.70-79,000.68

Finding the Fourth Proportional to 142,662.87, 196,880.70 and 79,000.68

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Solution

The fourth proportional to 142,662.87, 196,880.70 and 79,000.68 is: 109,024.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,662.87 : 196,880.70 = 79,000.68 : x
  2. Step 2: Convert to fraction form
    142,662.87/196,880.70 = 79,000.68/x
  3. Step 3: Cross multiply
    142,662.87x = 196,880.70 × 79,000.68
  4. Step 4: Simplify right side
    142,662.87x = 15,553,709,178.88
  5. Step 5: Solve for x
    x = 15,553,709,178.88/142,662.87
  6. Step 6: Final answer
    x = 109,024.23

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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.