Home / 149,813.89-206,741.77-81,830.84

Finding the Fourth Proportional to 149,813.89, 206,741.77 and 81,830.84

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Solution

The fourth proportional to 149,813.89, 206,741.77 and 81,830.84 is: 112,925.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,813.89 : 206,741.77 = 81,830.84 : x
  2. Step 2: Convert to fraction form
    149,813.89/206,741.77 = 81,830.84/x
  3. Step 3: Cross multiply
    149,813.89x = 206,741.77 × 81,830.84
  4. Step 4: Simplify right side
    149,813.89x = 16,917,851,463.90
  5. Step 5: Solve for x
    x = 16,917,851,463.90/149,813.89
  6. Step 6: Final answer
    x = 112,925.79

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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.