Home / 204,909.40-307,036.05-129,895.30

Finding the Fourth Proportional to 204,909.40, 307,036.05 and 129,895.30

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Solution

The fourth proportional to 204,909.40, 307,036.05 and 129,895.30 is: 194,634.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,909.40 : 307,036.05 = 129,895.30 : x
  2. Step 2: Convert to fraction form
    204,909.40/307,036.05 = 129,895.30/x
  3. Step 3: Cross multiply
    204,909.40x = 307,036.05 × 129,895.30
  4. Step 4: Simplify right side
    204,909.40x = 39,882,539,825.57
  5. Step 5: Solve for x
    x = 39,882,539,825.57/204,909.40
  6. Step 6: Final answer
    x = 194,634.99

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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.