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Finding the Fourth Proportional to 121,342.70, 182,014.05 and 108,512.30

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Solution

The fourth proportional to 121,342.70, 182,014.05 and 108,512.30 is: 162,768.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,342.70 : 182,014.05 = 108,512.30 : x
  2. Step 2: Convert to fraction form
    121,342.70/182,014.05 = 108,512.30/x
  3. Step 3: Cross multiply
    121,342.70x = 182,014.05 × 108,512.30
  4. Step 4: Simplify right side
    121,342.70x = 19,750,763,197.82
  5. Step 5: Solve for x
    x = 19,750,763,197.82/121,342.70
  6. Step 6: Final answer
    x = 162,768.45

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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.