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Finding the Fourth Proportional to 119,381.60, 164,814.69 and 79,149.83

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Solution

The fourth proportional to 119,381.60, 164,814.69 and 79,149.83 is: 109,271.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,381.60 : 164,814.69 = 79,149.83 : x
  2. Step 2: Convert to fraction form
    119,381.60/164,814.69 = 79,149.83/x
  3. Step 3: Cross multiply
    119,381.60x = 164,814.69 × 79,149.83
  4. Step 4: Simplify right side
    119,381.60x = 13,045,054,695.00
  5. Step 5: Solve for x
    x = 13,045,054,695.00/119,381.60
  6. Step 6: Final answer
    x = 109,271.90

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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.