Home / 151,905.90-209,642.40-83,928.84

Finding the Fourth Proportional to 151,905.90, 209,642.40 and 83,928.84

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Solution

The fourth proportional to 151,905.90, 209,642.40 and 83,928.84 is: 115,828.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,905.90 : 209,642.40 = 83,928.84 : x
  2. Step 2: Convert to fraction form
    151,905.90/209,642.40 = 83,928.84/x
  3. Step 3: Cross multiply
    151,905.90x = 209,642.40 × 83,928.84
  4. Step 4: Simplify right side
    151,905.90x = 17,595,043,446.82
  5. Step 5: Solve for x
    x = 17,595,043,446.82/151,905.90
  6. Step 6: Final answer
    x = 115,828.57

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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.