Home / 81,192,640.20-121,788,960.30-63,973,951.80

Finding the Fourth Proportional to 81,192,640.20, 121,788,960.30 and 63,973,951.80

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Solution

The fourth proportional to 81,192,640.20, 121,788,960.30 and 63,973,951.80 is: 95,960,927.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,192,640.20 : 121,788,960.30 = 63,973,951.80 : x
  2. Step 2: Convert to fraction form
    81,192,640.20/121,788,960.30 = 63,973,951.80/x
  3. Step 3: Cross multiply
    81,192,640.20x = 121,788,960.30 × 63,973,951.80
  4. Step 4: Simplify right side
    81,192,640.20x = 7,791,321,076,004,313
  5. Step 5: Solve for x
    x = 7,791,321,076,004,313/81,192,640.20
  6. Step 6: Final answer
    x = 95,960,927.70

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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.