Home / 136,916.28-188,930.88-76,485.62

Finding the Fourth Proportional to 136,916.28, 188,930.88 and 76,485.62

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Solution

The fourth proportional to 136,916.28, 188,930.88 and 76,485.62 is: 105,542.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,916.28 : 188,930.88 = 76,485.62 : x
  2. Step 2: Convert to fraction form
    136,916.28/188,930.88 = 76,485.62/x
  3. Step 3: Cross multiply
    136,916.28x = 188,930.88 × 76,485.62
  4. Step 4: Simplify right side
    136,916.28x = 14,450,495,966.27
  5. Step 5: Solve for x
    x = 14,450,495,966.27/136,916.28
  6. Step 6: Final answer
    x = 105,542.57

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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.