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Finding the Fourth Proportional to 158,349.44, 218,522.32 and 86,729.44

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Solution

The fourth proportional to 158,349.44, 218,522.32 and 86,729.44 is: 119,686.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,349.44 : 218,522.32 = 86,729.44 : x
  2. Step 2: Convert to fraction form
    158,349.44/218,522.32 = 86,729.44/x
  3. Step 3: Cross multiply
    158,349.44x = 218,522.32 × 86,729.44
  4. Step 4: Simplify right side
    158,349.44x = 18,952,318,441.10
  5. Step 5: Solve for x
    x = 18,952,318,441.10/158,349.44
  6. Step 6: Final answer
    x = 119,686.68

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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.