Home / 210,974.82-291,145.68-115,487.61

Finding the Fourth Proportional to 210,974.82, 291,145.68 and 115,487.61

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Solution

The fourth proportional to 210,974.82, 291,145.68 and 115,487.61 is: 159,373.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,974.82 : 291,145.68 = 115,487.61 : x
  2. Step 2: Convert to fraction form
    210,974.82/291,145.68 = 115,487.61/x
  3. Step 3: Cross multiply
    210,974.82x = 291,145.68 × 115,487.61
  4. Step 4: Simplify right side
    210,974.82x = 33,623,718,745.02
  5. Step 5: Solve for x
    x = 33,623,718,745.02/210,974.82
  6. Step 6: Final answer
    x = 159,373.14

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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.