Home / 89,039.70-133,559.55-85,103.10

Finding the Fourth Proportional to 89,039.70, 133,559.55 and 85,103.10

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Solution

The fourth proportional to 89,039.70, 133,559.55 and 85,103.10 is: 127,654.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,039.70 : 133,559.55 = 85,103.10 : x
  2. Step 2: Convert to fraction form
    89,039.70/133,559.55 = 85,103.10/x
  3. Step 3: Cross multiply
    89,039.70x = 133,559.55 × 85,103.10
  4. Step 4: Simplify right side
    89,039.70x = 11,366,331,739.61
  5. Step 5: Solve for x
    x = 11,366,331,739.61/89,039.70
  6. Step 6: Final answer
    x = 127,654.65

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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.