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Finding the Fourth Proportional to 158,622.10, 218,912.54 and 87,016.08

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Solution

The fourth proportional to 158,622.10, 218,912.54 and 87,016.08 is: 120,089.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,622.10 : 218,912.54 = 87,016.08 : x
  2. Step 2: Convert to fraction form
    158,622.10/218,912.54 = 87,016.08/x
  3. Step 3: Cross multiply
    158,622.10x = 218,912.54 × 87,016.08
  4. Step 4: Simplify right side
    158,622.10x = 19,048,911,093.64
  5. Step 5: Solve for x
    x = 19,048,911,093.64/158,622.10
  6. Step 6: Final answer
    x = 120,089.89

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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.