Home / 112,961.06-169,331.42-53,780.84

Finding the Fourth Proportional to 112,961.06, 169,331.42 and 53,780.84

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Solution

The fourth proportional to 112,961.06, 169,331.42 and 53,780.84 is: 80,618.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,961.06 : 169,331.42 = 53,780.84 : x
  2. Step 2: Convert to fraction form
    112,961.06/169,331.42 = 53,780.84/x
  3. Step 3: Cross multiply
    112,961.06x = 169,331.42 × 53,780.84
  4. Step 4: Simplify right side
    112,961.06x = 9,106,786,005.99
  5. Step 5: Solve for x
    x = 9,106,786,005.99/112,961.06
  6. Step 6: Final answer
    x = 80,618.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.