Home / 84,769.38-127,153.14-20,728.08

Finding the Fourth Proportional to 84,769.38, 127,153.14 and 20,728.08

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Solution

The fourth proportional to 84,769.38, 127,153.14 and 20,728.08 is: 31,091.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,769.38 : 127,153.14 = 20,728.08 : x
  2. Step 2: Convert to fraction form
    84,769.38/127,153.14 = 20,728.08/x
  3. Step 3: Cross multiply
    84,769.38x = 127,153.14 × 20,728.08
  4. Step 4: Simplify right side
    84,769.38x = 2,635,640,458.17
  5. Step 5: Solve for x
    x = 2,635,640,458.17/84,769.38
  6. Step 6: Final answer
    x = 31,091.89

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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.