Home / 210,997.05-291,176.43-115,509.90

Finding the Fourth Proportional to 210,997.05, 291,176.43 and 115,509.90

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Solution

The fourth proportional to 210,997.05, 291,176.43 and 115,509.90 is: 159,403.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,997.05 : 291,176.43 = 115,509.90 : x
  2. Step 2: Convert to fraction form
    210,997.05/291,176.43 = 115,509.90/x
  3. Step 3: Cross multiply
    210,997.05x = 291,176.43 × 115,509.90
  4. Step 4: Simplify right side
    210,997.05x = 33,633,759,878.49
  5. Step 5: Solve for x
    x = 33,633,759,878.49/210,997.05
  6. Step 6: Final answer
    x = 159,403.93

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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.