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Finding the Fourth Proportional to 121,346.70, 182,020.05 and 108,516.30

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Solution

The fourth proportional to 121,346.70, 182,020.05 and 108,516.30 is: 162,774.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,346.70 : 182,020.05 = 108,516.30 : x
  2. Step 2: Convert to fraction form
    121,346.70/182,020.05 = 108,516.30/x
  3. Step 3: Cross multiply
    121,346.70x = 182,020.05 × 108,516.30
  4. Step 4: Simplify right side
    121,346.70x = 19,752,142,351.82
  5. Step 5: Solve for x
    x = 19,752,142,351.82/121,346.70
  6. Step 6: Final answer
    x = 162,774.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.