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Finding the Fourth Proportional to 158,630.96, 218,911.02 and 87,011.56

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Solution

The fourth proportional to 158,630.96, 218,911.02 and 87,011.56 is: 120,076.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,630.96 : 218,911.02 = 87,011.56 : x
  2. Step 2: Convert to fraction form
    158,630.96/218,911.02 = 87,011.56/x
  3. Step 3: Cross multiply
    158,630.96x = 218,911.02 × 87,011.56
  4. Step 4: Simplify right side
    158,630.96x = 19,047,789,351.39
  5. Step 5: Solve for x
    x = 19,047,789,351.39/158,630.96
  6. Step 6: Final answer
    x = 120,076.11

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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.