Home / 135,569.62-203,325.54-85,582.90

Finding the Fourth Proportional to 135,569.62, 203,325.54 and 85,582.90

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Solution

The fourth proportional to 135,569.62, 203,325.54 and 85,582.90 is: 128,356.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,569.62 : 203,325.54 = 85,582.90 : x
  2. Step 2: Convert to fraction form
    135,569.62/203,325.54 = 85,582.90/x
  3. Step 3: Cross multiply
    135,569.62x = 203,325.54 × 85,582.90
  4. Step 4: Simplify right side
    135,569.62x = 17,401,189,357.27
  5. Step 5: Solve for x
    x = 17,401,189,357.27/135,569.62
  6. Step 6: Final answer
    x = 128,356.11

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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.