Home / 85,140.39-127,513.74-82,187.94

Finding the Fourth Proportional to 85,140.39, 127,513.74 and 82,187.94

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Solution

The fourth proportional to 85,140.39, 127,513.74 and 82,187.94 is: 123,091.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,140.39 : 127,513.74 = 82,187.94 : x
  2. Step 2: Convert to fraction form
    85,140.39/127,513.74 = 82,187.94/x
  3. Step 3: Cross multiply
    85,140.39x = 127,513.74 × 82,187.94
  4. Step 4: Simplify right side
    85,140.39x = 10,480,091,612.30
  5. Step 5: Solve for x
    x = 10,480,091,612.30/85,140.39
  6. Step 6: Final answer
    x = 123,091.89

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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.