Home / 189,875.43-261,789.92-121,772.25

Finding the Fourth Proportional to 189,875.43, 261,789.92 and 121,772.25

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Solution

The fourth proportional to 189,875.43, 261,789.92 and 121,772.25 is: 167,892.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,875.43 : 261,789.92 = 121,772.25 : x
  2. Step 2: Convert to fraction form
    189,875.43/261,789.92 = 121,772.25/x
  3. Step 3: Cross multiply
    189,875.43x = 261,789.92 × 121,772.25
  4. Step 4: Simplify right side
    189,875.43x = 31,878,746,976.86
  5. Step 5: Solve for x
    x = 31,878,746,976.86/189,875.43
  6. Step 6: Final answer
    x = 167,892.95

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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.