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Finding the Fourth Proportional to 117,139.48, 161,664.06 and 66,846.04

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Solution

The fourth proportional to 117,139.48, 161,664.06 and 66,846.04 is: 92,254.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,139.48 : 161,664.06 = 66,846.04 : x
  2. Step 2: Convert to fraction form
    117,139.48/161,664.06 = 66,846.04/x
  3. Step 3: Cross multiply
    117,139.48x = 161,664.06 × 66,846.04
  4. Step 4: Simplify right side
    117,139.48x = 10,806,602,221.32
  5. Step 5: Solve for x
    x = 10,806,602,221.32/117,139.48
  6. Step 6: Final answer
    x = 92,254.14

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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.