Home / 212,109.36-318,164.04-87,447.12

Finding the Fourth Proportional to 212,109.36, 318,164.04 and 87,447.12

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Solution

The fourth proportional to 212,109.36, 318,164.04 and 87,447.12 is: 131,170.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,109.36 : 318,164.04 = 87,447.12 : x
  2. Step 2: Convert to fraction form
    212,109.36/318,164.04 = 87,447.12/x
  3. Step 3: Cross multiply
    212,109.36x = 318,164.04 × 87,447.12
  4. Step 4: Simplify right side
    212,109.36x = 27,822,528,985.56
  5. Step 5: Solve for x
    x = 27,822,528,985.56/212,109.36
  6. Step 6: Final answer
    x = 131,170.68

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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.