Home / 149,709.66-206,590.56-81,713.16

Finding the Fourth Proportional to 149,709.66, 206,590.56 and 81,713.16

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Solution

The fourth proportional to 149,709.66, 206,590.56 and 81,713.16 is: 112,759.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,709.66 : 206,590.56 = 81,713.16 : x
  2. Step 2: Convert to fraction form
    149,709.66/206,590.56 = 81,713.16/x
  3. Step 3: Cross multiply
    149,709.66x = 206,590.56 × 81,713.16
  4. Step 4: Simplify right side
    149,709.66x = 16,881,167,483.77
  5. Step 5: Solve for x
    x = 16,881,167,483.77/149,709.66
  6. Step 6: Final answer
    x = 112,759.37

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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.