Home / 268,609.16-402,918.39-91,120.74

Finding the Fourth Proportional to 268,609.16, 402,918.39 and 91,120.74

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Solution

The fourth proportional to 268,609.16, 402,918.39 and 91,120.74 is: 136,682.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,609.16 : 402,918.39 = 91,120.74 : x
  2. Step 2: Convert to fraction form
    268,609.16/402,918.39 = 91,120.74/x
  3. Step 3: Cross multiply
    268,609.16x = 402,918.39 × 91,120.74
  4. Step 4: Simplify right side
    268,609.16x = 36,714,221,856.41
  5. Step 5: Solve for x
    x = 36,714,221,856.41/268,609.16
  6. Step 6: Final answer
    x = 136,682.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.