Home / 212,027.60-318,187.20-87,368.60

Finding the Fourth Proportional to 212,027.60, 318,187.20 and 87,368.60

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Solution

The fourth proportional to 212,027.60, 318,187.20 and 87,368.60 is: 131,112.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,027.60 : 318,187.20 = 87,368.60 : x
  2. Step 2: Convert to fraction form
    212,027.60/318,187.20 = 87,368.60/x
  3. Step 3: Cross multiply
    212,027.60x = 318,187.20 × 87,368.60
  4. Step 4: Simplify right side
    212,027.60x = 27,799,570,201.92
  5. Step 5: Solve for x
    x = 27,799,570,201.92/212,027.60
  6. Step 6: Final answer
    x = 131,112.98

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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.