Home / 149,407.02-206,175.67-81,422.53

Finding the Fourth Proportional to 149,407.02, 206,175.67 and 81,422.53

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Solution

The fourth proportional to 149,407.02, 206,175.67 and 81,422.53 is: 112,359.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,407.02 : 206,175.67 = 81,422.53 : x
  2. Step 2: Convert to fraction form
    149,407.02/206,175.67 = 81,422.53/x
  3. Step 3: Cross multiply
    149,407.02x = 206,175.67 × 81,422.53
  4. Step 4: Simplify right side
    149,407.02x = 16,787,343,956.85
  5. Step 5: Solve for x
    x = 16,787,343,956.85/149,407.02
  6. Step 6: Final answer
    x = 112,359.81

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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.