Home / 151,431.21-208,976.45-83,450.62

Finding the Fourth Proportional to 151,431.21, 208,976.45 and 83,450.62

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Solution

The fourth proportional to 151,431.21, 208,976.45 and 83,450.62 is: 115,162.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,431.21 : 208,976.45 = 83,450.62 : x
  2. Step 2: Convert to fraction form
    151,431.21/208,976.45 = 83,450.62/x
  3. Step 3: Cross multiply
    151,431.21x = 208,976.45 × 83,450.62
  4. Step 4: Simplify right side
    151,431.21x = 17,439,214,572.60
  5. Step 5: Solve for x
    x = 17,439,214,572.60/151,431.21
  6. Step 6: Final answer
    x = 115,162.62

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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.