Home / 131,651.10-181,677.78-71,221.58

Finding the Fourth Proportional to 131,651.10, 181,677.78 and 71,221.58

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Solution

The fourth proportional to 131,651.10, 181,677.78 and 71,221.58 is: 98,285.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,651.10 : 181,677.78 = 71,221.58 : x
  2. Step 2: Convert to fraction form
    131,651.10/181,677.78 = 71,221.58/x
  3. Step 3: Cross multiply
    131,651.10x = 181,677.78 × 71,221.58
  4. Step 4: Simplify right side
    131,651.10x = 12,939,378,542.49
  5. Step 5: Solve for x
    x = 12,939,378,542.49/131,651.10
  6. Step 6: Final answer
    x = 98,285.38

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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.