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Finding the Fourth Proportional to 138,205.80, 207,527.40 and 104,963.40

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Solution

The fourth proportional to 138,205.80, 207,527.40 and 104,963.40 is: 157,611.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,205.80 : 207,527.40 = 104,963.40 : x
  2. Step 2: Convert to fraction form
    138,205.80/207,527.40 = 104,963.40/x
  3. Step 3: Cross multiply
    138,205.80x = 207,527.40 × 104,963.40
  4. Step 4: Simplify right side
    138,205.80x = 21,782,781,497.16
  5. Step 5: Solve for x
    x = 21,782,781,497.16/138,205.80
  6. Step 6: Final answer
    x = 157,611.20

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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.