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Finding the Fourth Proportional to 128,096.01, 176,771.49 and 70,738.90

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Solution

The fourth proportional to 128,096.01, 176,771.49 and 70,738.90 is: 97,619.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,096.01 : 176,771.49 = 70,738.90 : x
  2. Step 2: Convert to fraction form
    128,096.01/176,771.49 = 70,738.90/x
  3. Step 3: Cross multiply
    128,096.01x = 176,771.49 × 70,738.90
  4. Step 4: Simplify right side
    128,096.01x = 12,504,620,753.96
  5. Step 5: Solve for x
    x = 12,504,620,753.96/128,096.01
  6. Step 6: Final answer
    x = 97,619.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.