Home / 136,880.40-188,876.26-76,443.34

Finding the Fourth Proportional to 136,880.40, 188,876.26 and 76,443.34

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Solution

The fourth proportional to 136,880.40, 188,876.26 and 76,443.34 is: 105,481.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,880.40 : 188,876.26 = 76,443.34 : x
  2. Step 2: Convert to fraction form
    136,880.40/188,876.26 = 76,443.34/x
  3. Step 3: Cross multiply
    136,880.40x = 188,876.26 × 76,443.34
  4. Step 4: Simplify right side
    136,880.40x = 14,438,331,497.81
  5. Step 5: Solve for x
    x = 14,438,331,497.81/136,880.40
  6. Step 6: Final answer
    x = 105,481.37

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1.5x scale

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.