Home / 142,022.53-196,002.80-81,604.83

Finding the Fourth Proportional to 142,022.53, 196,002.80 and 81,604.83

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Solution

The fourth proportional to 142,022.53, 196,002.80 and 81,604.83 is: 112,621.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,022.53 : 196,002.80 = 81,604.83 : x
  2. Step 2: Convert to fraction form
    142,022.53/196,002.80 = 81,604.83/x
  3. Step 3: Cross multiply
    142,022.53x = 196,002.80 × 81,604.83
  4. Step 4: Simplify right side
    142,022.53x = 15,994,775,173.52
  5. Step 5: Solve for x
    x = 15,994,775,173.52/142,022.53
  6. Step 6: Final answer
    x = 112,621.39

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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.