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Finding the Fourth Proportional to 117,292.31, 161,861.63 and 66,303.24

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Solution

The fourth proportional to 117,292.31, 161,861.63 and 66,303.24 is: 91,497.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,292.31 : 161,861.63 = 66,303.24 : x
  2. Step 2: Convert to fraction form
    117,292.31/161,861.63 = 66,303.24/x
  3. Step 3: Cross multiply
    117,292.31x = 161,861.63 × 66,303.24
  4. Step 4: Simplify right side
    117,292.31x = 10,731,950,169.17
  5. Step 5: Solve for x
    x = 10,731,950,169.17/117,292.31
  6. Step 6: Final answer
    x = 91,497.48

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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.