Home / 121,904.24-168,331.68-76,657.94

Finding the Fourth Proportional to 121,904.24, 168,331.68 and 76,657.94

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Solution

The fourth proportional to 121,904.24, 168,331.68 and 76,657.94 is: 105,853.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,904.24 : 168,331.68 = 76,657.94 : x
  2. Step 2: Convert to fraction form
    121,904.24/168,331.68 = 76,657.94/x
  3. Step 3: Cross multiply
    121,904.24x = 168,331.68 × 76,657.94
  4. Step 4: Simplify right side
    121,904.24x = 12,903,959,825.54
  5. Step 5: Solve for x
    x = 12,903,959,825.54/121,904.24
  6. Step 6: Final answer
    x = 105,853.25

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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.