Home / 215,838.90-297,884.61-123,986.88

Finding the Fourth Proportional to 215,838.90, 297,884.61 and 123,986.88

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Solution

The fourth proportional to 215,838.90, 297,884.61 and 123,986.88 is: 171,117.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,838.90 : 297,884.61 = 123,986.88 : x
  2. Step 2: Convert to fraction form
    215,838.90/297,884.61 = 123,986.88/x
  3. Step 3: Cross multiply
    215,838.90x = 297,884.61 × 123,986.88
  4. Step 4: Simplify right side
    215,838.90x = 36,933,783,393.92
  5. Step 5: Solve for x
    x = 36,933,783,393.92/215,838.90
  6. Step 6: Final answer
    x = 171,117.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.