Home / 116,730.78-161,089.14-66,429.78

Finding the Fourth Proportional to 116,730.78, 161,089.14 and 66,429.78

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Solution

The fourth proportional to 116,730.78, 161,089.14 and 66,429.78 is: 91,673.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,730.78 : 161,089.14 = 66,429.78 : x
  2. Step 2: Convert to fraction form
    116,730.78/161,089.14 = 66,429.78/x
  3. Step 3: Cross multiply
    116,730.78x = 161,089.14 × 66,429.78
  4. Step 4: Simplify right side
    116,730.78x = 10,701,116,130.59
  5. Step 5: Solve for x
    x = 10,701,116,130.59/116,730.78
  6. Step 6: Final answer
    x = 91,673.47

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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.