Home / 103,426,156.20-155,139,234.30-72,815,154.60

Finding the Fourth Proportional to 103,426,156.20, 155,139,234.30 and 72,815,154.60

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Solution

The fourth proportional to 103,426,156.20, 155,139,234.30 and 72,815,154.60 is: 109,222,731.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,426,156.20 : 155,139,234.30 = 72,815,154.60 : x
  2. Step 2: Convert to fraction form
    103,426,156.20/155,139,234.30 = 72,815,154.60/x
  3. Step 3: Cross multiply
    103,426,156.20x = 155,139,234.30 × 72,815,154.60
  4. Step 4: Simplify right side
    103,426,156.20x = 11,296,487,330,080,122
  5. Step 5: Solve for x
    x = 11,296,487,330,080,122/103,426,156.20
  6. Step 6: Final answer
    x = 109,222,731.90

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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.