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Finding the Fourth Proportional to 187,246.80, 280,870.20 and 137,091.60

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Solution

The fourth proportional to 187,246.80, 280,870.20 and 137,091.60 is: 205,637.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,246.80 : 280,870.20 = 137,091.60 : x
  2. Step 2: Convert to fraction form
    187,246.80/280,870.20 = 137,091.60/x
  3. Step 3: Cross multiply
    187,246.80x = 280,870.20 × 137,091.60
  4. Step 4: Simplify right side
    187,246.80x = 38,504,945,110.32
  5. Step 5: Solve for x
    x = 38,504,945,110.32/187,246.80
  6. Step 6: Final answer
    x = 205,637.40

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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.