Home / 159,259.12-219,786.66-91,287.40

Finding the Fourth Proportional to 159,259.12, 219,786.66 and 91,287.40

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Solution

The fourth proportional to 159,259.12, 219,786.66 and 91,287.40 is: 125,981.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,259.12 : 219,786.66 = 91,287.40 : x
  2. Step 2: Convert to fraction form
    159,259.12/219,786.66 = 91,287.40/x
  3. Step 3: Cross multiply
    159,259.12x = 219,786.66 × 91,287.40
  4. Step 4: Simplify right side
    159,259.12x = 20,063,752,746.08
  5. Step 5: Solve for x
    x = 20,063,752,746.08/159,259.12
  6. Step 6: Final answer
    x = 125,981.81

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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.