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Finding the Fourth Proportional to 130,124, 179,571.36 and 70,508

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Solution

The fourth proportional to 130,124, 179,571.36 and 70,508 is: 97,301.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,124 : 179,571.36 = 70,508 : x
  2. Step 2: Convert to fraction form
    130,124/179,571.36 = 70,508/x
  3. Step 3: Cross multiply
    130,124x = 179,571.36 × 70,508
  4. Step 4: Simplify right side
    130,124x = 12,661,217,450.88
  5. Step 5: Solve for x
    x = 12,661,217,450.88/130,124
  6. Step 6: Final answer
    x = 97,301.17

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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.