Home / 210,971.05-291,141.86-120,331.61

Finding the Fourth Proportional to 210,971.05, 291,141.86 and 120,331.61

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Solution

The fourth proportional to 210,971.05, 291,141.86 and 120,331.61 is: 166,058.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,971.05 : 291,141.86 = 120,331.61 : x
  2. Step 2: Convert to fraction form
    210,971.05/291,141.86 = 120,331.61/x
  3. Step 3: Cross multiply
    210,971.05x = 291,141.86 × 120,331.61
  4. Step 4: Simplify right side
    210,971.05x = 35,033,567,597.31
  5. Step 5: Solve for x
    x = 35,033,567,597.31/210,971.05
  6. Step 6: Final answer
    x = 166,058.65

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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.