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Finding the Fourth Proportional to 154,609.96, 213,362.82 and 86,629.48

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Solution

The fourth proportional to 154,609.96, 213,362.82 and 86,629.48 is: 119,549.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,609.96 : 213,362.82 = 86,629.48 : x
  2. Step 2: Convert to fraction form
    154,609.96/213,362.82 = 86,629.48/x
  3. Step 3: Cross multiply
    154,609.96x = 213,362.82 × 86,629.48
  4. Step 4: Simplify right side
    154,609.96x = 18,483,510,147.93
  5. Step 5: Solve for x
    x = 18,483,510,147.93/154,609.96
  6. Step 6: Final answer
    x = 119,549.28

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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.