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Finding the Fourth Proportional to 250,020, 345,027.60 and 136,842.75

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Solution

The fourth proportional to 250,020, 345,027.60 and 136,842.75 is: 188,843.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,020 : 345,027.60 = 136,842.75 : x
  2. Step 2: Convert to fraction form
    250,020/345,027.60 = 136,842.75/x
  3. Step 3: Cross multiply
    250,020x = 345,027.60 × 136,842.75
  4. Step 4: Simplify right side
    250,020x = 47,214,525,609.90
  5. Step 5: Solve for x
    x = 47,214,525,609.90/250,020
  6. Step 6: Final answer
    x = 188,843.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.