Home / 103,520,123.20-155,148,308.70-55,021,211.20

Finding the Fourth Proportional to 103,520,123.20, 155,148,308.70 and 55,021,211.20

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Solution

The fourth proportional to 103,520,123.20, 155,148,308.70 and 55,021,211.20 is: 82,461,724.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,520,123.20 : 155,148,308.70 = 55,021,211.20 : x
  2. Step 2: Convert to fraction form
    103,520,123.20/155,148,308.70 = 55,021,211.20/x
  3. Step 3: Cross multiply
    103,520,123.20x = 155,148,308.70 × 55,021,211.20
  4. Step 4: Simplify right side
    103,520,123.20x = 8,536,447,860,305,497
  5. Step 5: Solve for x
    x = 8,536,447,860,305,497/103,520,123.20
  6. Step 6: Final answer
    x = 82,461,724.31

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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.