Home / 131,651.11-181,677.78-71,221.58

Finding the Fourth Proportional to 131,651.11, 181,677.78 and 71,221.58

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Solution

The fourth proportional to 131,651.11, 181,677.78 and 71,221.58 is: 98,285.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,651.11 : 181,677.78 = 71,221.58 : x
  2. Step 2: Convert to fraction form
    131,651.11/181,677.78 = 71,221.58/x
  3. Step 3: Cross multiply
    131,651.11x = 181,677.78 × 71,221.58
  4. Step 4: Simplify right side
    131,651.11x = 12,939,377,634.10
  5. Step 5: Solve for x
    x = 12,939,377,634.10/131,651.11
  6. Step 6: Final answer
    x = 98,285.37

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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.