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Finding the Fourth Proportional to 183,405.72, 253,006.74 and 119,780.76

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Solution

The fourth proportional to 183,405.72, 253,006.74 and 119,780.76 is: 165,236.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,405.72 : 253,006.74 = 119,780.76 : x
  2. Step 2: Convert to fraction form
    183,405.72/253,006.74 = 119,780.76/x
  3. Step 3: Cross multiply
    183,405.72x = 253,006.74 × 119,780.76
  4. Step 4: Simplify right side
    183,405.72x = 30,305,339,602.32
  5. Step 5: Solve for x
    x = 30,305,339,602.32/183,405.72
  6. Step 6: Final answer
    x = 165,236.61

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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.