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Finding the Fourth Proportional to 136,681.80, 205,022.70 and 124,434.60

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Solution

The fourth proportional to 136,681.80, 205,022.70 and 124,434.60 is: 186,651.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,681.80 : 205,022.70 = 124,434.60 : x
  2. Step 2: Convert to fraction form
    136,681.80/205,022.70 = 124,434.60/x
  3. Step 3: Cross multiply
    136,681.80x = 205,022.70 × 124,434.60
  4. Step 4: Simplify right side
    136,681.80x = 25,511,917,665.42
  5. Step 5: Solve for x
    x = 25,511,917,665.42/136,681.80
  6. Step 6: Final answer
    x = 186,651.90

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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.