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Finding the Fourth Proportional to 158,234.58, 218,362.89 and 85,637.46

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Solution

The fourth proportional to 158,234.58, 218,362.89 and 85,637.46 is: 118,179.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,234.58 : 218,362.89 = 85,637.46 : x
  2. Step 2: Convert to fraction form
    158,234.58/218,362.89 = 85,637.46/x
  3. Step 3: Cross multiply
    158,234.58x = 218,362.89 × 85,637.46
  4. Step 4: Simplify right side
    158,234.58x = 18,700,043,257.86
  5. Step 5: Solve for x
    x = 18,700,043,257.86/158,234.58
  6. Step 6: Final answer
    x = 118,179.25

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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.