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Finding the Fourth Proportional to 158,108.88, 218,193.54 and 86,493.54

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Solution

The fourth proportional to 158,108.88, 218,193.54 and 86,493.54 is: 119,362.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,108.88 : 218,193.54 = 86,493.54 : x
  2. Step 2: Convert to fraction form
    158,108.88/218,193.54 = 86,493.54/x
  3. Step 3: Cross multiply
    158,108.88x = 218,193.54 × 86,493.54
  4. Step 4: Simplify right side
    158,108.88x = 18,872,331,679.73
  5. Step 5: Solve for x
    x = 18,872,331,679.73/158,108.88
  6. Step 6: Final answer
    x = 119,362.88

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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.