Home / 88,835.20-133,325.70-85,919.20

Finding the Fourth Proportional to 88,835.20, 133,325.70 and 85,919.20

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Solution

The fourth proportional to 88,835.20, 133,325.70 and 85,919.20 is: 128,949.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,835.20 : 133,325.70 = 85,919.20 : x
  2. Step 2: Convert to fraction form
    88,835.20/133,325.70 = 85,919.20/x
  3. Step 3: Cross multiply
    88,835.20x = 133,325.70 × 85,919.20
  4. Step 4: Simplify right side
    88,835.20x = 11,455,237,483.44
  5. Step 5: Solve for x
    x = 11,455,237,483.44/88,835.20
  6. Step 6: Final answer
    x = 128,949.31

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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.