Home / 210,844.16-316,309.12-86,195.20

Finding the Fourth Proportional to 210,844.16, 316,309.12 and 86,195.20

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Solution

The fourth proportional to 210,844.16, 316,309.12 and 86,195.20 is: 129,310.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,844.16 : 316,309.12 = 86,195.20 : x
  2. Step 2: Convert to fraction form
    210,844.16/316,309.12 = 86,195.20/x
  3. Step 3: Cross multiply
    210,844.16x = 316,309.12 × 86,195.20
  4. Step 4: Simplify right side
    210,844.16x = 27,264,327,860.22
  5. Step 5: Solve for x
    x = 27,264,327,860.22/210,844.16
  6. Step 6: Final answer
    x = 129,310.33

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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.