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Finding the Fourth Proportional to 120,308.63, 166,069.71 and 70,007.63

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Solution

The fourth proportional to 120,308.63, 166,069.71 and 70,007.63 is: 96,636.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,308.63 : 166,069.71 = 70,007.63 : x
  2. Step 2: Convert to fraction form
    120,308.63/166,069.71 = 70,007.63/x
  3. Step 3: Cross multiply
    120,308.63x = 166,069.71 × 70,007.63
  4. Step 4: Simplify right side
    120,308.63x = 11,626,145,981.54
  5. Step 5: Solve for x
    x = 11,626,145,981.54/120,308.63
  6. Step 6: Final answer
    x = 96,636.01

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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.