Home / 121,766.50-182,450.07-86,053.39

Finding the Fourth Proportional to 121,766.50, 182,450.07 and 86,053.39

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Solution

The fourth proportional to 121,766.50, 182,450.07 and 86,053.39 is: 128,938.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,766.50 : 182,450.07 = 86,053.39 : x
  2. Step 2: Convert to fraction form
    121,766.50/182,450.07 = 86,053.39/x
  3. Step 3: Cross multiply
    121,766.50x = 182,450.07 × 86,053.39
  4. Step 4: Simplify right side
    121,766.50x = 15,700,446,573.11
  5. Step 5: Solve for x
    x = 15,700,446,573.11/121,766.50
  6. Step 6: Final answer
    x = 128,938.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.