Home / 149,660.53-206,536.34-85,128.10

Finding the Fourth Proportional to 149,660.53, 206,536.34 and 85,128.10

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Solution

The fourth proportional to 149,660.53, 206,536.34 and 85,128.10 is: 117,479.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,660.53 : 206,536.34 = 85,128.10 : x
  2. Step 2: Convert to fraction form
    149,660.53/206,536.34 = 85,128.10/x
  3. Step 3: Cross multiply
    149,660.53x = 206,536.34 × 85,128.10
  4. Step 4: Simplify right side
    149,660.53x = 17,582,045,901.63
  5. Step 5: Solve for x
    x = 17,582,045,901.63/149,660.53
  6. Step 6: Final answer
    x = 117,479.51

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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.