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Finding the Fourth Proportional to 131,215.84, 181,059.60 and 74,620.96

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Solution

The fourth proportional to 131,215.84, 181,059.60 and 74,620.96 is: 102,966.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,215.84 : 181,059.60 = 74,620.96 : x
  2. Step 2: Convert to fraction form
    131,215.84/181,059.60 = 74,620.96/x
  3. Step 3: Cross multiply
    131,215.84x = 181,059.60 × 74,620.96
  4. Step 4: Simplify right side
    131,215.84x = 13,510,841,169.22
  5. Step 5: Solve for x
    x = 13,510,841,169.22/131,215.84
  6. Step 6: Final answer
    x = 102,966.54

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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.