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Finding the Fourth Proportional to 133,989.94, 184,870.16 and 79,496.80

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Solution

The fourth proportional to 133,989.94, 184,870.16 and 79,496.80 is: 109,684.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,989.94 : 184,870.16 = 79,496.80 : x
  2. Step 2: Convert to fraction form
    133,989.94/184,870.16 = 79,496.80/x
  3. Step 3: Cross multiply
    133,989.94x = 184,870.16 × 79,496.80
  4. Step 4: Simplify right side
    133,989.94x = 14,696,584,979.25
  5. Step 5: Solve for x
    x = 14,696,584,979.25/133,989.94
  6. Step 6: Final answer
    x = 109,684.24

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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.