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Finding the Fourth Proportional to 129,934.94, 179,310.21 and 70,318.94

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Solution

The fourth proportional to 129,934.94, 179,310.21 and 70,318.94 is: 97,040.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,934.94 : 179,310.21 = 70,318.94 : x
  2. Step 2: Convert to fraction form
    129,934.94/179,310.21 = 70,318.94/x
  3. Step 3: Cross multiply
    129,934.94x = 179,310.21 × 70,318.94
  4. Step 4: Simplify right side
    129,934.94x = 12,608,903,898.38
  5. Step 5: Solve for x
    x = 12,608,903,898.38/129,934.94
  6. Step 6: Final answer
    x = 97,040.13

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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.