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Finding the Fourth Proportional to 133,330.72, 183,999.32 and 79,605.72

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Solution

The fourth proportional to 133,330.72, 183,999.32 and 79,605.72 is: 109,857.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,330.72 : 183,999.32 = 79,605.72 : x
  2. Step 2: Convert to fraction form
    133,330.72/183,999.32 = 79,605.72/x
  3. Step 3: Cross multiply
    133,330.72x = 183,999.32 × 79,605.72
  4. Step 4: Simplify right side
    133,330.72x = 14,647,398,348.11
  5. Step 5: Solve for x
    x = 14,647,398,348.11/133,330.72
  6. Step 6: Final answer
    x = 109,857.64

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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.