Home / 103,700.04-155,308.80-100,861.56

Finding the Fourth Proportional to 103,700.04, 155,308.80 and 100,861.56

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Solution

The fourth proportional to 103,700.04, 155,308.80 and 100,861.56 is: 151,057.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,700.04 : 155,308.80 = 100,861.56 : x
  2. Step 2: Convert to fraction form
    103,700.04/155,308.80 = 100,861.56/x
  3. Step 3: Cross multiply
    103,700.04x = 155,308.80 × 100,861.56
  4. Step 4: Simplify right side
    103,700.04x = 15,664,687,849.73
  5. Step 5: Solve for x
    x = 15,664,687,849.73/103,700.04
  6. Step 6: Final answer
    x = 151,057.68

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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.