Home / 149,428.47-206,208.43-81,445.87

Finding the Fourth Proportional to 149,428.47, 206,208.43 and 81,445.87

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Solution

The fourth proportional to 149,428.47, 206,208.43 and 81,445.87 is: 112,393.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,428.47 : 206,208.43 = 81,445.87 : x
  2. Step 2: Convert to fraction form
    149,428.47/206,208.43 = 81,445.87/x
  3. Step 3: Cross multiply
    149,428.47x = 206,208.43 × 81,445.87
  4. Step 4: Simplify right side
    149,428.47x = 16,794,824,982.68
  5. Step 5: Solve for x
    x = 16,794,824,982.68/149,428.47
  6. Step 6: Final answer
    x = 112,393.74

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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.