Home / 85,175.02-116,690.20-81,982.66

Finding the Fourth Proportional to 85,175.02, 116,690.20 and 81,982.66

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Solution

The fourth proportional to 85,175.02, 116,690.20 and 81,982.66 is: 112,316.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,175.02 : 116,690.20 = 81,982.66 : x
  2. Step 2: Convert to fraction form
    85,175.02/116,690.20 = 81,982.66/x
  3. Step 3: Cross multiply
    85,175.02x = 116,690.20 × 81,982.66
  4. Step 4: Simplify right side
    85,175.02x = 9,566,573,272.81
  5. Step 5: Solve for x
    x = 9,566,573,272.81/85,175.02
  6. Step 6: Final answer
    x = 112,316.65

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.