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Finding the Fourth Proportional to 158,425.64, 218,627.34 and 86,808.38

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Solution

The fourth proportional to 158,425.64, 218,627.34 and 86,808.38 is: 119,795.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,425.64 : 218,627.34 = 86,808.38 : x
  2. Step 2: Convert to fraction form
    158,425.64/218,627.34 = 86,808.38/x
  3. Step 3: Cross multiply
    158,425.64x = 218,627.34 × 86,808.38
  4. Step 4: Simplify right side
    158,425.64x = 18,978,685,209.11
  5. Step 5: Solve for x
    x = 18,978,685,209.11/158,425.64
  6. Step 6: Final answer
    x = 119,795.54

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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.