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Finding the Fourth Proportional to 158,654.54, 218,942.04 and 87,034.07

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Solution

The fourth proportional to 158,654.54, 218,942.04 and 87,034.07 is: 120,106.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,654.54 : 218,942.04 = 87,034.07 : x
  2. Step 2: Convert to fraction form
    158,654.54/218,942.04 = 87,034.07/x
  3. Step 3: Cross multiply
    158,654.54x = 218,942.04 × 87,034.07
  4. Step 4: Simplify right side
    158,654.54x = 19,055,416,835.30
  5. Step 5: Solve for x
    x = 19,055,416,835.30/158,654.54
  6. Step 6: Final answer
    x = 120,106.34

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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.