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Finding the Fourth Proportional to 151,775.28, 209,449.56 and 84,707.28

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Solution

The fourth proportional to 151,775.28, 209,449.56 and 84,707.28 is: 116,895.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,775.28 : 209,449.56 = 84,707.28 : x
  2. Step 2: Convert to fraction form
    151,775.28/209,449.56 = 84,707.28/x
  3. Step 3: Cross multiply
    151,775.28x = 209,449.56 × 84,707.28
  4. Step 4: Simplify right side
    151,775.28x = 17,741,902,524.80
  5. Step 5: Solve for x
    x = 17,741,902,524.80/151,775.28
  6. Step 6: Final answer
    x = 116,895.86

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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.