Home / 268,008.36-402,070.86-81,015

Finding the Fourth Proportional to 268,008.36, 402,070.86 and 81,015

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Solution

The fourth proportional to 268,008.36, 402,070.86 and 81,015 is: 121,540.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,008.36 : 402,070.86 = 81,015 : x
  2. Step 2: Convert to fraction form
    268,008.36/402,070.86 = 81,015/x
  3. Step 3: Cross multiply
    268,008.36x = 402,070.86 × 81,015
  4. Step 4: Simplify right side
    268,008.36x = 32,573,770,722.90
  5. Step 5: Solve for x
    x = 32,573,770,722.90/268,008.36
  6. Step 6: Final answer
    x = 121,540.13

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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.