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Finding the Fourth Proportional to 116,844, 161,244.72 and 66,547.68

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Solution

The fourth proportional to 116,844, 161,244.72 and 66,547.68 is: 91,835.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,844 : 161,244.72 = 66,547.68 : x
  2. Step 2: Convert to fraction form
    116,844/161,244.72 = 66,547.68/x
  3. Step 3: Cross multiply
    116,844x = 161,244.72 × 66,547.68
  4. Step 4: Simplify right side
    116,844x = 10,730,462,028.25
  5. Step 5: Solve for x
    x = 10,730,462,028.25/116,844
  6. Step 6: Final answer
    x = 91,835.80

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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.