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Finding the Fourth Proportional to 154,608.96, 213,361.44 and 86,628.48

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Solution

The fourth proportional to 154,608.96, 213,361.44 and 86,628.48 is: 119,547.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,608.96 : 213,361.44 = 86,628.48 : x
  2. Step 2: Convert to fraction form
    154,608.96/213,361.44 = 86,628.48/x
  3. Step 3: Cross multiply
    154,608.96x = 213,361.44 × 86,628.48
  4. Step 4: Simplify right side
    154,608.96x = 18,483,177,237.81
  5. Step 5: Solve for x
    x = 18,483,177,237.81/154,608.96
  6. Step 6: Final answer
    x = 119,547.90

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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.