Home / 151,764.57-209,436.80-83,781.58

Finding the Fourth Proportional to 151,764.57, 209,436.80 and 83,781.58

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Solution

The fourth proportional to 151,764.57, 209,436.80 and 83,781.58 is: 115,619.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,764.57 : 209,436.80 = 83,781.58 : x
  2. Step 2: Convert to fraction form
    151,764.57/209,436.80 = 83,781.58/x
  3. Step 3: Cross multiply
    151,764.57x = 209,436.80 × 83,781.58
  4. Step 4: Simplify right side
    151,764.57x = 17,546,946,014.14
  5. Step 5: Solve for x
    x = 17,546,946,014.14/151,764.57
  6. Step 6: Final answer
    x = 115,619.52

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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.