Home / 210,826.92-290,936-129,186.94

Finding the Fourth Proportional to 210,826.92, 290,936 and 129,186.94

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Solution

The fourth proportional to 210,826.92, 290,936 and 129,186.94 is: 178,274.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,826.92 : 290,936 = 129,186.94 : x
  2. Step 2: Convert to fraction form
    210,826.92/290,936 = 129,186.94/x
  3. Step 3: Cross multiply
    210,826.92x = 290,936 × 129,186.94
  4. Step 4: Simplify right side
    210,826.92x = 37,585,131,575.84
  5. Step 5: Solve for x
    x = 37,585,131,575.84/210,826.92
  6. Step 6: Final answer
    x = 178,274.82

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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.