Home / 121,927.70-168,317.75-91,724.52

Finding the Fourth Proportional to 121,927.70, 168,317.75 and 91,724.52

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Solution

The fourth proportional to 121,927.70, 168,317.75 and 91,724.52 is: 126,623.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,927.70 : 168,317.75 = 91,724.52 : x
  2. Step 2: Convert to fraction form
    121,927.70/168,317.75 = 91,724.52/x
  3. Step 3: Cross multiply
    121,927.70x = 168,317.75 × 91,724.52
  4. Step 4: Simplify right side
    121,927.70x = 15,438,864,367.61
  5. Step 5: Solve for x
    x = 15,438,864,367.61/121,927.70
  6. Step 6: Final answer
    x = 126,623.11

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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.