Home / 198,313,101.65-297,270,102.90-81,813,426.86

Finding the Fourth Proportional to 198,313,101.65, 297,270,102.90 and 81,813,426.86

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Solution

The fourth proportional to 198,313,101.65, 297,270,102.90 and 81,813,426.86 is: 122,637,816.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,313,101.65 : 297,270,102.90 = 81,813,426.86 : x
  2. Step 2: Convert to fraction form
    198,313,101.65/297,270,102.90 = 81,813,426.86/x
  3. Step 3: Cross multiply
    198,313,101.65x = 297,270,102.90 × 81,813,426.86
  4. Step 4: Simplify right side
    198,313,101.65x = 24,320,685,822,323,800
  5. Step 5: Solve for x
    x = 24,320,685,822,323,800/198,313,101.65
  6. Step 6: Final answer
    x = 122,637,816.76

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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.