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Finding the Fourth Proportional to 116,864, 161,272.32 and 66,592.16

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Solution

The fourth proportional to 116,864, 161,272.32 and 66,592.16 is: 91,897.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,864 : 161,272.32 = 66,592.16 : x
  2. Step 2: Convert to fraction form
    116,864/161,272.32 = 66,592.16/x
  3. Step 3: Cross multiply
    116,864x = 161,272.32 × 66,592.16
  4. Step 4: Simplify right side
    116,864x = 10,739,472,137.01
  5. Step 5: Solve for x
    x = 10,739,472,137.01/116,864
  6. Step 6: Final answer
    x = 91,897.18

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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.