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Finding the Fourth Proportional to 99,065,164.80, 148,597,747.20 and 53,148,662.40

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Solution

The fourth proportional to 99,065,164.80, 148,597,747.20 and 53,148,662.40 is: 79,722,993.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,065,164.80 : 148,597,747.20 = 53,148,662.40 : x
  2. Step 2: Convert to fraction form
    99,065,164.80/148,597,747.20 = 53,148,662.40/x
  3. Step 3: Cross multiply
    99,065,164.80x = 148,597,747.20 × 53,148,662.40
  4. Step 4: Simplify right side
    99,065,164.80x = 7,897,771,499,333,344
  5. Step 5: Solve for x
    x = 7,897,771,499,333,344/99,065,164.80
  6. Step 6: Final answer
    x = 79,722,993.60

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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.