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Finding the Fourth Proportional to 129,940.71, 179,318.16 and 70,324.71

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Solution

The fourth proportional to 129,940.71, 179,318.16 and 70,324.71 is: 97,048.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,940.71 : 179,318.16 = 70,324.71 : x
  2. Step 2: Convert to fraction form
    129,940.71/179,318.16 = 70,324.71/x
  3. Step 3: Cross multiply
    129,940.71x = 179,318.16 × 70,324.71
  4. Step 4: Simplify right side
    129,940.71x = 12,610,497,599.73
  5. Step 5: Solve for x
    x = 12,610,497,599.73/129,940.71
  6. Step 6: Final answer
    x = 97,048.09

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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.