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Finding the Fourth Proportional to 153,213.70, 229,820.55 and 74,481.70

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Solution

The fourth proportional to 153,213.70, 229,820.55 and 74,481.70 is: 111,722.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,213.70 : 229,820.55 = 74,481.70 : x
  2. Step 2: Convert to fraction form
    153,213.70/229,820.55 = 74,481.70/x
  3. Step 3: Cross multiply
    153,213.70x = 229,820.55 × 74,481.70
  4. Step 4: Simplify right side
    153,213.70x = 17,117,425,258.94
  5. Step 5: Solve for x
    x = 17,117,425,258.94/153,213.70
  6. Step 6: Final answer
    x = 111,722.55

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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.