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Finding the Fourth Proportional to 131,776.66, 181,849.62 and 71,346.82

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Solution

The fourth proportional to 131,776.66, 181,849.62 and 71,346.82 is: 98,457.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,776.66 : 181,849.62 = 71,346.82 : x
  2. Step 2: Convert to fraction form
    131,776.66/181,849.62 = 71,346.82/x
  3. Step 3: Cross multiply
    131,776.66x = 181,849.62 × 71,346.82
  4. Step 4: Simplify right side
    131,776.66x = 12,974,392,105.21
  5. Step 5: Solve for x
    x = 12,974,392,105.21/131,776.66
  6. Step 6: Final answer
    x = 98,457.44

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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.