Home / 116,731.78-161,090.52-66,430.78

Finding the Fourth Proportional to 116,731.78, 161,090.52 and 66,430.78

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Solution

The fourth proportional to 116,731.78, 161,090.52 and 66,430.78 is: 91,674.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,731.78 : 161,090.52 = 66,430.78 : x
  2. Step 2: Convert to fraction form
    116,731.78/161,090.52 = 66,430.78/x
  3. Step 3: Cross multiply
    116,731.78x = 161,090.52 × 66,430.78
  4. Step 4: Simplify right side
    116,731.78x = 10,701,368,894.21
  5. Step 5: Solve for x
    x = 10,701,368,894.21/116,731.78
  6. Step 6: Final answer
    x = 91,674.85

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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.