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Finding the Fourth Proportional to 84,680.40, 127,020.60 and 70,902.30

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Solution

The fourth proportional to 84,680.40, 127,020.60 and 70,902.30 is: 106,353.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,680.40 : 127,020.60 = 70,902.30 : x
  2. Step 2: Convert to fraction form
    84,680.40/127,020.60 = 70,902.30/x
  3. Step 3: Cross multiply
    84,680.40x = 127,020.60 × 70,902.30
  4. Step 4: Simplify right side
    84,680.40x = 9,006,052,687.38
  5. Step 5: Solve for x
    x = 9,006,052,687.38/84,680.40
  6. Step 6: Final answer
    x = 106,353.45

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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.