Home / 136,936.40-205,404.60-89,697.20

Finding the Fourth Proportional to 136,936.40, 205,404.60 and 89,697.20

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Solution

The fourth proportional to 136,936.40, 205,404.60 and 89,697.20 is: 134,545.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,936.40 : 205,404.60 = 89,697.20 : x
  2. Step 2: Convert to fraction form
    136,936.40/205,404.60 = 89,697.20/x
  3. Step 3: Cross multiply
    136,936.40x = 205,404.60 × 89,697.20
  4. Step 4: Simplify right side
    136,936.40x = 18,424,217,487.12
  5. Step 5: Solve for x
    x = 18,424,217,487.12/136,936.40
  6. Step 6: Final answer
    x = 134,545.80

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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.