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Finding the Fourth Proportional to 118,857.40, 178,221.70 and 52,219.51

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Solution

The fourth proportional to 118,857.40, 178,221.70 and 52,219.51 is: 78,300.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,857.40 : 178,221.70 = 52,219.51 : x
  2. Step 2: Convert to fraction form
    118,857.40/178,221.70 = 52,219.51/x
  3. Step 3: Cross multiply
    118,857.40x = 178,221.70 × 52,219.51
  4. Step 4: Simplify right side
    118,857.40x = 9,306,649,845.37
  5. Step 5: Solve for x
    x = 9,306,649,845.37/118,857.40
  6. Step 6: Final answer
    x = 78,300.97

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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.