Home / 204,645.12-307,009.32-86,316.88

Finding the Fourth Proportional to 204,645.12, 307,009.32 and 86,316.88

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Solution

The fourth proportional to 204,645.12, 307,009.32 and 86,316.88 is: 129,492.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,645.12 : 307,009.32 = 86,316.88 : x
  2. Step 2: Convert to fraction form
    204,645.12/307,009.32 = 86,316.88/x
  3. Step 3: Cross multiply
    204,645.12x = 307,009.32 × 86,316.88
  4. Step 4: Simplify right side
    204,645.12x = 26,500,086,633.32
  5. Step 5: Solve for x
    x = 26,500,086,633.32/204,645.12
  6. Step 6: Final answer
    x = 129,492.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.