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Finding the Fourth Proportional to 186,660.40, 279,990.60 and 112,010.80

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Solution

The fourth proportional to 186,660.40, 279,990.60 and 112,010.80 is: 168,016.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,660.40 : 279,990.60 = 112,010.80 : x
  2. Step 2: Convert to fraction form
    186,660.40/279,990.60 = 112,010.80/x
  3. Step 3: Cross multiply
    186,660.40x = 279,990.60 × 112,010.80
  4. Step 4: Simplify right side
    186,660.40x = 31,361,971,098.48
  5. Step 5: Solve for x
    x = 31,361,971,098.48/186,660.40
  6. Step 6: Final answer
    x = 168,016.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.