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Finding the Fourth Proportional to 126,908.70, 175,141 and 70,318.86

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Solution

The fourth proportional to 126,908.70, 175,141 and 70,318.86 is: 97,043.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,908.70 : 175,141 = 70,318.86 : x
  2. Step 2: Convert to fraction form
    126,908.70/175,141 = 70,318.86/x
  3. Step 3: Cross multiply
    126,908.70x = 175,141 × 70,318.86
  4. Step 4: Simplify right side
    126,908.70x = 12,315,715,459.26
  5. Step 5: Solve for x
    x = 12,315,715,459.26/126,908.70
  6. Step 6: Final answer
    x = 97,043.90

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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.