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Finding the Fourth Proportional to 143,892,101.20, 215,838,151.80 and 100,809,950.80

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Solution

The fourth proportional to 143,892,101.20, 215,838,151.80 and 100,809,950.80 is: 151,214,926.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,892,101.20 : 215,838,151.80 = 100,809,950.80 : x
  2. Step 2: Convert to fraction form
    143,892,101.20/215,838,151.80 = 100,809,950.80/x
  3. Step 3: Cross multiply
    143,892,101.20x = 215,838,151.80 × 100,809,950.80
  4. Step 4: Simplify right side
    143,892,101.20x = 21,758,633,463,720,932
  5. Step 5: Solve for x
    x = 21,758,633,463,720,932/143,892,101.20
  6. Step 6: Final answer
    x = 151,214,926.20

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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.