Home / 136,916.43-188,937.93-76,475.04

Finding the Fourth Proportional to 136,916.43, 188,937.93 and 76,475.04

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Solution

The fourth proportional to 136,916.43, 188,937.93 and 76,475.04 is: 105,531.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,916.43 : 188,937.93 = 76,475.04 : x
  2. Step 2: Convert to fraction form
    136,916.43/188,937.93 = 76,475.04/x
  3. Step 3: Cross multiply
    136,916.43x = 188,937.93 × 76,475.04
  4. Step 4: Simplify right side
    136,916.43x = 14,449,035,754.27
  5. Step 5: Solve for x
    x = 14,449,035,754.27/136,916.43
  6. Step 6: Final answer
    x = 105,531.79

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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.