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Finding the Fourth Proportional to 158,474.46, 218,695.59 and 86,855.10

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Solution

The fourth proportional to 158,474.46, 218,695.59 and 86,855.10 is: 119,860.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,474.46 : 218,695.59 = 86,855.10 : x
  2. Step 2: Convert to fraction form
    158,474.46/218,695.59 = 86,855.10/x
  3. Step 3: Cross multiply
    158,474.46x = 218,695.59 × 86,855.10
  4. Step 4: Simplify right side
    158,474.46x = 18,994,827,339.01
  5. Step 5: Solve for x
    x = 18,994,827,339.01/158,474.46
  6. Step 6: Final answer
    x = 119,860.50

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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.