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Finding the Fourth Proportional to 99,647,851.40, 148,993,480.20 and 73,819,818.80

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Solution

The fourth proportional to 99,647,851.40, 148,993,480.20 and 73,819,818.80 is: 110,375,402.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,647,851.40 : 148,993,480.20 = 73,819,818.80 : x
  2. Step 2: Convert to fraction form
    99,647,851.40/148,993,480.20 = 73,819,818.80/x
  3. Step 3: Cross multiply
    99,647,851.40x = 148,993,480.20 × 73,819,818.80
  4. Step 4: Simplify right side
    99,647,851.40x = 10,998,671,710,745,386
  5. Step 5: Solve for x
    x = 10,998,671,710,745,386/99,647,851.40
  6. Step 6: Final answer
    x = 110,375,402.54

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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.