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Finding the Fourth Proportional to 153,825.40, 230,738.10 and 142,015.60

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Solution

The fourth proportional to 153,825.40, 230,738.10 and 142,015.60 is: 213,023.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,825.40 : 230,738.10 = 142,015.60 : x
  2. Step 2: Convert to fraction form
    153,825.40/230,738.10 = 142,015.60/x
  3. Step 3: Cross multiply
    153,825.40x = 230,738.10 × 142,015.60
  4. Step 4: Simplify right side
    153,825.40x = 32,768,409,714.36
  5. Step 5: Solve for x
    x = 32,768,409,714.36/153,825.40
  6. Step 6: Final answer
    x = 213,023.40

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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.