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Finding the Fourth Proportional to 117,664.16, 162,508.72 and 91,127.64

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Solution

The fourth proportional to 117,664.16, 162,508.72 and 91,127.64 is: 125,858.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,664.16 : 162,508.72 = 91,127.64 : x
  2. Step 2: Convert to fraction form
    117,664.16/162,508.72 = 91,127.64/x
  3. Step 3: Cross multiply
    117,664.16x = 162,508.72 × 91,127.64
  4. Step 4: Simplify right side
    117,664.16x = 14,809,036,133.02
  5. Step 5: Solve for x
    x = 14,809,036,133.02/117,664.16
  6. Step 6: Final answer
    x = 125,858.51

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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.