Home / 210,768.68-290,853.59-120,153.85

Finding the Fourth Proportional to 210,768.68, 290,853.59 and 120,153.85

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Solution

The fourth proportional to 210,768.68, 290,853.59 and 120,153.85 is: 165,808.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,768.68 : 290,853.59 = 120,153.85 : x
  2. Step 2: Convert to fraction form
    210,768.68/290,853.59 = 120,153.85/x
  3. Step 3: Cross multiply
    210,768.68x = 290,853.59 × 120,153.85
  4. Step 4: Simplify right side
    210,768.68x = 34,947,177,296.92
  5. Step 5: Solve for x
    x = 34,947,177,296.92/210,768.68
  6. Step 6: Final answer
    x = 165,808.21

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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.