Home / 158,433.90-218,638.74-86,816.60

Finding the Fourth Proportional to 158,433.90, 218,638.74 and 86,816.60

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Solution

The fourth proportional to 158,433.90, 218,638.74 and 86,816.60 is: 119,806.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,433.90 : 218,638.74 = 86,816.60 : x
  2. Step 2: Convert to fraction form
    158,433.90/218,638.74 = 86,816.60/x
  3. Step 3: Cross multiply
    158,433.90x = 218,638.74 × 86,816.60
  4. Step 4: Simplify right side
    158,433.90x = 18,981,472,035.08
  5. Step 5: Solve for x
    x = 18,981,472,035.08/158,433.90
  6. Step 6: Final answer
    x = 119,806.88

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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.