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Finding the Fourth Proportional to 106,628.67, 147,195.46 and 70,351.47

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Solution

The fourth proportional to 106,628.67, 147,195.46 and 70,351.47 is: 97,116.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,628.67 : 147,195.46 = 70,351.47 : x
  2. Step 2: Convert to fraction form
    106,628.67/147,195.46 = 70,351.47/x
  3. Step 3: Cross multiply
    106,628.67x = 147,195.46 × 70,351.47
  4. Step 4: Simplify right side
    106,628.67x = 10,355,416,617.38
  5. Step 5: Solve for x
    x = 10,355,416,617.38/106,628.67
  6. Step 6: Final answer
    x = 97,116.62

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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.