Home / 212,027.10-318,186.45-87,368.10

Finding the Fourth Proportional to 212,027.10, 318,186.45 and 87,368.10

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Solution

The fourth proportional to 212,027.10, 318,186.45 and 87,368.10 is: 131,112.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,027.10 : 318,186.45 = 87,368.10 : x
  2. Step 2: Convert to fraction form
    212,027.10/318,186.45 = 87,368.10/x
  3. Step 3: Cross multiply
    212,027.10x = 318,186.45 × 87,368.10
  4. Step 4: Simplify right side
    212,027.10x = 27,799,345,582.25
  5. Step 5: Solve for x
    x = 27,799,345,582.25/212,027.10
  6. Step 6: Final answer
    x = 131,112.23

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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.