Home / 79,131.16-118,612.56-54,164.20

Finding the Fourth Proportional to 79,131.16, 118,612.56 and 54,164.20

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Solution

The fourth proportional to 79,131.16, 118,612.56 and 54,164.20 is: 81,188.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,131.16 : 118,612.56 = 54,164.20 : x
  2. Step 2: Convert to fraction form
    79,131.16/118,612.56 = 54,164.20/x
  3. Step 3: Cross multiply
    79,131.16x = 118,612.56 × 54,164.20
  4. Step 4: Simplify right side
    79,131.16x = 6,424,554,422.35
  5. Step 5: Solve for x
    x = 6,424,554,422.35/79,131.16
  6. Step 6: Final answer
    x = 81,188.68

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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.