Home / 116,721.93-161,077.01-66,420.93

Finding the Fourth Proportional to 116,721.93, 161,077.01 and 66,420.93

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Solution

The fourth proportional to 116,721.93, 161,077.01 and 66,420.93 is: 91,661.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,721.93 : 161,077.01 = 66,420.93 : x
  2. Step 2: Convert to fraction form
    116,721.93/161,077.01 = 66,420.93/x
  3. Step 3: Cross multiply
    116,721.93x = 161,077.01 × 66,420.93
  4. Step 4: Simplify right side
    116,721.93x = 10,698,884,473.71
  5. Step 5: Solve for x
    x = 10,698,884,473.71/116,721.93
  6. Step 6: Final answer
    x = 91,661.31

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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.