Home / 117,128.40-161,663.76-91,584.24

Finding the Fourth Proportional to 117,128.40, 161,663.76 and 91,584.24

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Solution

The fourth proportional to 117,128.40, 161,663.76 and 91,584.24 is: 126,407.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,128.40 : 161,663.76 = 91,584.24 : x
  2. Step 2: Convert to fraction form
    117,128.40/161,663.76 = 91,584.24/x
  3. Step 3: Cross multiply
    117,128.40x = 161,663.76 × 91,584.24
  4. Step 4: Simplify right side
    117,128.40x = 14,805,852,595.14
  5. Step 5: Solve for x
    x = 14,805,852,595.14/117,128.40
  6. Step 6: Final answer
    x = 126,407.03

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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.