Home / 137,806.72-190,182.65-76,559.92

Finding the Fourth Proportional to 137,806.72, 190,182.65 and 76,559.92

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Solution

The fourth proportional to 137,806.72, 190,182.65 and 76,559.92 is: 105,657.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,806.72 : 190,182.65 = 76,559.92 : x
  2. Step 2: Convert to fraction form
    137,806.72/190,182.65 = 76,559.92/x
  3. Step 3: Cross multiply
    137,806.72x = 190,182.65 × 76,559.92
  4. Step 4: Simplify right side
    137,806.72x = 14,560,367,611.13
  5. Step 5: Solve for x
    x = 14,560,367,611.13/137,806.72
  6. Step 6: Final answer
    x = 105,657.89

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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.