Home / 143,131.02-197,529.75-82,712.76

Finding the Fourth Proportional to 143,131.02, 197,529.75 and 82,712.76

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Solution

The fourth proportional to 143,131.02, 197,529.75 and 82,712.76 is: 114,148.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,131.02 : 197,529.75 = 82,712.76 : x
  2. Step 2: Convert to fraction form
    143,131.02/197,529.75 = 82,712.76/x
  3. Step 3: Cross multiply
    143,131.02x = 197,529.75 × 82,712.76
  4. Step 4: Simplify right side
    143,131.02x = 16,338,230,804.61
  5. Step 5: Solve for x
    x = 16,338,230,804.61/143,131.02
  6. Step 6: Final answer
    x = 114,148.78

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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.