Home / 136,440.43-188,301.64-76,020.91

Finding the Fourth Proportional to 136,440.43, 188,301.64 and 76,020.91

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Solution

The fourth proportional to 136,440.43, 188,301.64 and 76,020.91 is: 104,916.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,440.43 : 188,301.64 = 76,020.91 : x
  2. Step 2: Convert to fraction form
    136,440.43/188,301.64 = 76,020.91/x
  3. Step 3: Cross multiply
    136,440.43x = 188,301.64 × 76,020.91
  4. Step 4: Simplify right side
    136,440.43x = 14,314,862,027.29
  5. Step 5: Solve for x
    x = 14,314,862,027.29/136,440.43
  6. Step 6: Final answer
    x = 104,916.57

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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.