Home / 151,869.33-209,578.67-83,890.68

Finding the Fourth Proportional to 151,869.33, 209,578.67 and 83,890.68

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Solution

The fourth proportional to 151,869.33, 209,578.67 and 83,890.68 is: 115,768.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,869.33 : 209,578.67 = 83,890.68 : x
  2. Step 2: Convert to fraction form
    151,869.33/209,578.67 = 83,890.68/x
  3. Step 3: Cross multiply
    151,869.33x = 209,578.67 × 83,890.68
  4. Step 4: Simplify right side
    151,869.33x = 17,581,696,720.34
  5. Step 5: Solve for x
    x = 17,581,696,720.34/151,869.33
  6. Step 6: Final answer
    x = 115,768.58

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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.